Balance is of no importance in a single player, or non-competitive, game. D:OS is not a competitive game - it only has co-op mode. So the "patch" for a talent pair being too powerful is to not choose those talents when you level up.
That's strange, because it seems most of the game developers do care about balance in SINGLE PLAYER.
This game isn't made for one person and their preferences. If you find something that works badly, don't use it. If you find something that makes the game too easy for you, don't use it. But don't ask that the game be changed because you don't like something in it that clearly works and has - especially in its component parts - real value.
And that's funny. You're saying the game isn't made for one person, but you're writing like it was made only for you and others have no right to say anything about it. I don't like such attitude, so if you don't agree and have nothing constructive to say just leave, please.
I would guess that for everyone who thinks something is too powerful, there's at least one other person who wants it for their own enjoyment. Some people like an easymode stroll through a game. Some are masochistic grognards. It takes both and everyone in between to make an audience for a game.
Judging the game as a whole it's certainly not an easy one. It's a true cRPG, so such combo seems to be a bug. Sorry, but you make no sense to me.
And just because it bears repeating - balance is of no importance in a single player or non-competitive game. It's literally made for people to be able to win at it. Logical results from that should be unsurprising.
To bad it's just your opinion and doesn't reflect reality. I'd like to hear the response from developers rather than some weekend player. D:OS is not stupid Skyrim, so such high bonus which makes character indestructible in many cases points to bug.