Level cap has already been addressed.
Yes it’s 4 for EA, so what... but the end level is going to be higher than level 10. Besides BG1 only went up to around lvl 10, didn’t hurt that game.

Magic Missile missing? Not seen that happen, must need to play more and try, not saying you’re wrong just haven’t seen it myself.

Not being able to one shot creatures with spells? Shadowheart has a couple that murder goblins or similar easily enough (Necrotic for example) , I just usually don’t waste them on the goblins, though it might make the fights quicker given how easy it is to rest currently.

The UI needs work, plus there’s the annoying (presumably bug) that deselected spells from your quickbar when you click on them sometimes.

So yeah there’s work to be done for sure, think it’s a little early to say it’s the worst though.