I think the real issue here is deciding that just because "You can basically kill almost every encounter with spamming sneak attacks with Astarion and Cantrip magic" means you actually should. What if you changed your playstyle to potentially suboptimal yet interesting and unique strategies instead? What if you imposed a challenge on yourself like a No Astarion/Stealth run?
Hey Larian the game isn't fun when I play it like this.
Then don't play it like that.
If such things are in the game by design, then the designed game balance is bad. And if the designed game balance is bad, it is on the ones who designed the balance to fix it, not the players. Simple as.
