IMO the 3d shots in the trailer show them off a bit better:
https://www.youtube.com/watch?v=lF6i-vEidDE
All 3 elves look pretty dynamic really, to my eye, the sword-and-board especially.
What we can see of their cards looks pretty interesting with a squint. Looks like all the elves, anyway, can move or charge with a move token, which is huge - although, considering the way Idoneth work in AoS, I wouldn't be surprised if they lose that ability when inspired. And the fish just straight up has no stats and can't take actions? Funky, but it seems like they might be 3 elves and a crab and there's a bunch of fish floating around too, rather than a 5-fighter warband
per se.
For more imminent releases, Path to Glory did their
walk-through of the new orcs, and they sound pretty solid! Yet another Direchasm "good but not overwhelming, with a strongly-defined niche" warband, which you love to see.