So only thing I got is numbers, and also that it's not 'just like ME3 MP'. But basically it looks like the skill trees, of which each kit has 2, is filled with 6 active skills, there 6 upgrades (that is, 1 upgrade 'per' skill), and 10 passives. That comes out to 12 active skills and 20 passives, or 44 total points to spend stuff on. Apparently there isn't a respec option (or might be and the guy was just confused) outside of restarting the character over at lvl 1. Which you know, is worth it cause you'll get +1 to an attribute for all your characters that way.
Anyway, can only have 4 skills bound at a time so gadda pick 4 outa the 12, always have 1 point in the 2 starter skills so from 1-20, you basically have 19 skill points of wiggle room. I'm personally seeing a hell of a lot more customization then ME3 had with these class kits. Just more skill combinations, more passive effects and all that. Also the games not wave based, it's a dungeon crawler. Though the not-in-game part is very, very similar for sure. Course you have crafting instead of reliance entirely on RNGesus.