Removing things completely is almost never the solution. As someone who enjoys playing scoundrels /rogues in RPGs, I see literally no reason to remove them, you'd only be fucking over non-mages.
SlamPow has more or less the right idea, making them more rare won't be a bad change. Thing is, people who explore will still have more than enough of them, and there's nothing you can do about that.
I'd bring back the throw spread and tie it to Finesse. Introducing damage /CC fall-off would be nice as well.
I'd argue that removing them is a solution exactly because DOS1 was a better game, better balanced, without them.
Just one of those fucking "charm" grenades is enough to end combat.
After scrolls and arrows it's just like "LETS GIVE EVERYONE EVERYTHING! GHUHAHUH?"
And yes it doesn't help that Larian treats all that crap as if there's a spell, special arrow or grenade under every fucking seashell, but that's their style. It's not for balance, it's for retarded children to feel like they're hitting a pinniata and getting candy. If they thought they were balancing the game then it'd have been sad, but I honestly believe they're consciously going for the "pinniata!" design instead of balanced game design.