if it were simply changing numbers, i would agree with you, but it's scaling up very early game bosses to a fairly high level. What happens is the next boss HAS to be even more scaled, and so on and so on. It affects the entire game drastically. Kagha is a relatively minor boss in this game. Even in the little we have of the game, she's not considered to be a scary villain type (at least by me). Minthara as well. The hag is a bit more for sure and the gith patrol oddly are the most threatening of everyone (which needs to change imo).

What happens when we bump them up is the next boss is either a similar level or more powerful. With the story Larian seems to be telling, it would seem that they're going to be having more and more powerful challenges as we go through the game, as is normal. So the bosses can't stay the same level, Kagha CANNOT be on the same level as the next boss without them seeming weak. So how would GM4HIM's plan work? Should an arch druid be more powerful than a bandit leader that we meet in act III?