I'm not for the purpose of arguing, just to make sure that I understand the problem right: The main problem with controls for you (Maximuuus, Tuco, others maybe) is that there are too many moves needed to switch between controlling one character or the whole group / part of the group?
Yeah, it has been explained over and over across the entire thread at this point, so it's a bit weird to come in with that request of clarification, but to be clear, the discussion here is not about what kind of maneuver the Larian UI allows you to do, but ab out how convoluted it makes it.
Things that with an "RTS-like" control scheme would literally take a couple of clicks here takes an inane amount of unnecessary intermediate steps.
Lets' take a scenario as an example:
PLAYER 1 is at the gates of a hostile camp and decides he wants to set up an ambush. As a starting maneuver he decides to put his party in stealth, move each one of his party members in a specific corner of the area, then he opens the dances, wipes the enemies (let's sya the brigands) from the face of the planet and goes back to move his entire party as one.
In a traditional system: He will select the whole party, click/press the "stealth" command, then with literally just two clicks for each, he will select and move every character exactly where he wants it. When the fight will be done, a quick click and drag on the whole party or a press the "select all" shortcut and and he will go on his way.
With the Larian system: Click stealth. Oh right, only the selected character goes in stealth, so repeat the process for each one of the four men (imagine if it was a party of six, sigh). Time to tell each one where to... Wait a second, why is everyone moving every time the selected character does? Oh right, time to UNCHAIN each one of them, either by dragging the portrait or right clicking on it and selecting the equivalent function. Now he can tell each one where to go, have the exact same fight and be on his wa- Wait a second, why is everyone standing aroud like an idiot? Oh right, before that he needs to re-select each one of them individually, relink them to the party (which by the way works only if they are already in the proximity, so maybe he needs to move everyone more closely before) and then finally be able to go on his way again.
And please, don't make the similar word count fool you, what we have on the latter is not "from 30% to 50% longer", the description of these actions may be somewhat comparable in length but this second process takes almost four times the amount of work of the first one in practical terms. Can you see why this system is garbage no matter from what angle you may look at it?
EDIT- Edited the post a bit because I was constantly going from second to third person and that made it particularly messy to read.