I am not so worried about the class balances.

DRK tanks fine with shadowwall being a bit worse.

Would like it to be 15 seconds long instead of 10 seconds to compensate (or really, so I stop using it too early).

But comparing them between classes is pointless. Whether or not you have a valid point (you don't, not really) people will constantly tell you "the kit is not one ability".

When in reality the tanks are so homogenized almost every ability has a 1 to 1 corresponding talent lol.