It's strong, but detect thoughts once per day and a proficiency on Insight might do it.
Detect thoughts at will wouldn't be so bad in the game in my opinion, because the conversations are scripted already and usually have more than one way to get the same information. It's not like you'll get any major revelations you wouldn't have otherwise given the nature of the game.
If I'm wrong and detect thoughts gets more powerful later in the game, maybe adding GOO specific conversation options would be a possible alternative.
