I'll say it again, but even though I'm not a huge fan of them, the Iron Hands are probably the chapter that would add the most compared to the existing ones.
The Black Templars NEED to be the 5th chapter for several reasons: 1) The largest Battle Barge in the Black Templar's fleet is named the Eternal Crusader. 2) They're a crusading chapter. 3) As far as SM chapters go they are one of the very few who regard the Emperor as the God-King of Mankind and therefore will bring a different feel and flavor to the SM faction compared to the other selected chapters. 4) They're basically the 40k universe's version of fanatic Knights Templar soldiers; more so than other chapters they are very 'medieval' in this way and more. 5) Sword Brethren, Crusader Squads, etc.
I voted for Raven guard, because i would like to have a variation to space marine play, not just assault up close like Space wolves and Blood angels. Imp fist and Iron hands are meh to me, not having any interesting lore that grabs me. White scars would be cool, but i feel to specialized for a first day launch chapter, could see them added in with community support later down the line. Black Templar i didnt vote for, because really it doesnt matter that this game is called Eternal Crusade, Doesnt give Templars the instant access right, plus as stated from what i know Black Templars are an assault heavy chapter, and we already got 2 of those. Which leaves Salamanders and Raven Guard. Salamanders are cool cause of the flame weapons, but i feel like Raven Guard just add so much more variation to the mix with they're stealthyness that i voted for them
