Solasta is definitely ugly and you can see the small budget in the graphics and voice acting.
Still, implementation of 5e mechanics is closer to the source than BG3, including features that players are asking through feedback.
Looking another games for a game dev is research, there is nothing "impolite" about the suggestion.
While your last sentence is true, there's a point in development where you have to stop looking left and right and just go forward. Usually that point is right after the concept stage when only basic engine programming has been done.
There's sunk cost, deadlines and revenue to bring in, and there are also players snapping at your heels to finish up the rest of this massive undertaking.
You can of course make tweaks, turn certain things up and others down in a measured way and I'm quite sure they will do that.
But suggesting to majorly revamp a majority of the combat system, this far in development, because you like a different game better is preposterous and I can't believe this doesn't occur to you.
I know, a lot of alleged "Betas" of other games (which are actually glorified marketing demos) have convinced you that you can still have major input on a games' design when it's already far enough along that you can play it without crashing every 2 minutes and every model has textures and animations. But that's not how development works in real life.
