On top of that, I have a pet-peeve with "Shadow Madness".
It doesn't list out that it lets you attack with it. No "Charge" is given, and no other MC effect does this.
So, how about we make things consistent while making Mind Control make people less likely to punch their monitors? Two-birds-one-stone.
Shadow Madness text changed to:
Gain control of an enemy minion with 3 or less Attack and grant it charge until end of turn.
Mind Control changed to Shadow Control:
Gain control of an enemy minion and grant it charge until the end of your opponent's turn.
Being 8 cost, I felt it would be more fitting to let you hold onto the stolen minion until the end of their turn, to give it more flexibility, such as using it to steal a taunt.
Note: If your problem with this idea is that it's a nerf, just stop.
Nerfing one card means other cards can be buffed - That's how balance SHOULD work.