I plan on rolling an creating 2 or 3 accounts to see how some classes work. Also it'll be hard to role out 4 or more alts since having more than one in a org is not really a good idea.
There's one character concept that jumps out cleary to me above all the others. I'll just go with a Scatterhome Human Fury. The only reason I'd switch out of the character would be if mechanically I hate the Fury playstyle (which would make me quite sad).
With the way credits and seconds work (see https://www.achaea.com/game-help/?what=second-characters-also-known-as-alts) I'll review every class and all of their skills first and just stick with one. Until multiclassing comes out.