I haven't played Bannerlord for quite a few months and I'm pleased to say that, overall, the game has really improved and I'm enjoying my playthrough. But, PLEASE Taleworlds, bring back the old system of out-of-combat assignment of units to groups! Trying to get specific units into the groups by "suggesting" to AI and the sliders is NOT WORKING. It's horrible.
As OP said, we need/want EXACT ways to decide which units belong in which troop groups. Basically, I'd like some variation of the old, out of combat method. I really have no idea why they made this change but it's my biggest dislike on returning and makes troop management horrible and frustrating.
But, as I said, apart from this I'm really happy with how the game appears to be developing. Just bring back manual player controlled troop assignment and FAST, please.