Depends, for instance in trials it can be rare to get a super unless the game goes on forever and it goes 4/4. So suppress nades are useless super wise in trials unless as I say its a long game. But suppress nades aren't just for supers... They can knock people out from using class abilities or nades or melees for a round if played right. Any other mode like control or even comp suppress nades are definitely strong counters to supers, which can flip games into your favour. Me personally I don't see anything wrong with every class having access to all nades or even invis or anything else. The only thing that should be separate is the class ability itself and supers. I can't wait for arc rework, because I do love lightning nades on titans and I would definitely use them on my hunter or warlock. Although it's a hard choice between arcbolt and lightning nades because both of them are really strong. One for clean ups or priming enemies. The other for map control or cover rejection.