I absolutely love Ulthwe due to the high amount of farseers and warlocks, but I would also love to see Saim-Hann riding on Eldar jetbikes. Seeing a streak of red bikes race through the air across a battlefield would certainly be sight to see.
While we have no Commonragh Eldars, I will stick with the Alaitoc, I suposse. The less amount of psyckers, the best.
When you look at the Craftworld's listed... You realize only one of them specializes in a large number of regular troops, and that's Alaitoc with their Ranger's. If these are the 4 Craftworld's we will see... it would be interesting, if anything, to see how they are portrayed. Aside from that... I think they should use different Craftworld's ( as important and well known as they may be ) since we will play the more generic infantry types.
Biel-Tan is as big as Iyanden was in it's heyday. They don't need to field regular troops to field a huge force.
Yeah i know that... but fielding masses of vehicles doesn't really reflect a playable character at all. Unless there's a pilot class. I'm just getting across how the battlefield tactics of these craftworld's, wouldn't really be any unit we could play. I'm sure Biel-Tan has Guardians... it's just not what they are renown for. Or... Anything that didn't later turn out to be a Vehicle or Construct. I don't wanna play as an inanimate object.
It's not un-fathomable though is it? Add the fact that 4 factions beating the crop out of each over one planet is also very unusual. Small sacrifice really for the gameplay. Maybe the planet will be an Eldar maiden world with significant religious significance or something.
I'd rather go with the fact they are the most 4 popular Craftworld's. I can understand there is a threat huge enough to require armies from each of the Craftworld's. Just the personal customization on our characters... i don't see how they will be reflected for each individual Craftworld ( aside from the obvious insignia ).