In their current form the Crimson Hunters are the only Aspect Warriors who can deal with Terminators at long range, but I guess they're disqualified on account on them having a Pulse Laser as their primary weapon backed up with a pair of Bright Lances. And they fly aircraft. In prior editions the Howling Banshees were your primary counter against Terminators: old-timey Power Swords made a mockery out of a 2+ Armor Save. But now that doesn't work anymore. Your only alternative is the Fire Dragons, but they have to get close. Which should not be too big a problem when around a decent amount of cover given that Terminators have limited range as well (but not as limited as the Dragons I may add).

But then again, if you as the Eldar fight your enemies on open ground you are doing it wrong.

So then not only is this about classes, but also about the gear that the said classes have and how its will work with them in terms of availability.

Important note: I do believe that the devs said that every single class is capable of damaging armor, but the "heavies" are obviously better at it. Still, something to consider. And then don't forget about Miguel's idea of tech splicing (I mentioned it in the General Discussion Forums somewhere)

I'm not much for a d-canon, cause it's not mobile and need several guardians to be manned, though having impressive firepower with aoe damage. It would cripple the host, having to stand to defend it, negating is mobility, thus putting all troops in danger.

In one hand, fire dragons would be quite effective against mega armoured nobs (more likely to attack at melee) as terminators equipped with melee weapons, chaplains, fire dragons being very mobile but equipped with short range weapons. In the other hand, heavy infantry like banshees/scorpions or dark reapers could deal with those types of melee elite classes, since melee terminators/heavy nobs would endangered themselves by deep striking into enemy lines.

In the opposite, wraithguards could deal with range elite class (terminator with assault canon, librarian, weirdboy) as against tanks and zerg without much risk, thanks to their range as aoe damage, thus stands the best choice as a hard counter against tanks as ranged elite classes, which more likely be usual considering people would unlikely put them in danger with a "hard to get" elite class.

Quite valid, though you can't expect every single terminator to be smart enough to not try to go solo. There are a lot of players who will be space marines so naturally there are bound to be some idiots who will want to prove something and get their asses handed to them in terminator suits.

Very valid, however I could see the D-Cannon implimented, perhaps, for base defence purposes. In that regard, I think it will be functional. But for attacking it is not as good, for the reasons you mentioned.

I am hoping that the Fire Dragons will have access to slightly longer ranger AT weapons. Their mobility is great, but as you said, too short range. I hope there will be a way around that (I'm hoping that the lance thing their Exarch has will not be Exarch only...) Which btw gives me an idea: Higher ranking Fire Dragons can spend more requisition on that thing anyone?

I think the biggest problem people have with having the Wraithguard as a playable option is tied to this game being close to lore. If it wasn't Wraithguard would not even be a discussion: in terms of gameplay it is a very valid unit to include for all the reasons you mentioned. But adding the lore, being deceaced (however you spell that) Eldar, that kind of complicates things somewhat, so them being NPCs that are summoned by the Spiritseer for requisition makes sense.

please understand that I am not saying that Wraithguard are an absolute no-no. Believe me, nothing would make me happier that seeing a pack of Space Marines being oblitarated by that bloody thing. So it would be awesome if the Wraithguard are included, but if the devs want to keep with the lore, they must make the inclusion make sense.

I fully understand this point, don't worry, what was bothering me was the ton used by the other poster to reply, not his critics.

Another point I did not mention is :
- having played DOW : Eldar army was boring, to rely heavily on infantry, thus having to deploy several units to get enough power, making the army as a whole highly easily targetted with big aoe damage weapons like orbital fires (which have been announced already) tanks and the such, not to mention grenades. Eldar players were highly predictable.
- having played DOW2 : Eldar was way more interesting to play, by having more high powerful units : d-canon, wraithguards, cause you could rely on a small unit to deal great amount of damage for standing still while defending, taking way less risk thus having way less casualties.

Moreover, having a more various amount of strategies to fulfill your mission, was making you less predictable : which is quite an advantage, believe me.

Eldar wanting to harass thanks to their mobility is a good point for evading battles thus casualties, being able to deploy decent fire power to take a strongpoint well defended is another one to consider for getting resources also. You won't do that with a bunch of light infantry.

True enough. But then wouldn't vehicles and aircraft be a sufficent method for assault and against armor?

Indeed, except if this is indoor outpost, which I think could be mostly the case, if you look at PS2 : no possibility of taking any major point with vehicles only, infantry thus heavy infantry is absolutely needed to cap.

I don't know what devs stated about aircrafts yet.

I think it would be quite annoying if we could deal with Termies only with vehicles and aircraft :/
We NEED something that can go indoors...

Well here is the interesting part actually: indoors, as I'm sure you are aware, are mostly close quarters. Wouldn't that mean that a class like Fire Dragons armed with those short ranged Fusion Guns will be close enough to hit a terminator enough times to bring them down? Just as an example. Any thoughts?

Actually, getting close is not the problem. The problem is, we will be too close to the lightning claws and hammers of said terminators that can beat us to pulp before we know it ^^; Thats the whole beauty of the terminator. Its not a joke that their full name is "Tactical Assault Power Armor" (if I recall is right). They are ment to be moving shields and powerhouses. Sadly, we cant really counter it head-on. Only Warlocks and Farseers match them in melee combat.