Option B. Block breakers (if you don't have grab combos, you probably have these)
Option C. Make them come to you. Ranged attacks for chip (if you don't have grab combos, you have ranged attacks. Fact.), AP farming (Toro, PaRappa, Emmett), taunting, etc.
Of all the characters, only Fat Princess (against some characters), Drake, Jak, Spike, Sir Dan, Nariko, and Zeus cannot combo out of their grabs. Add guard breaks to the mix, and now only Drake and Nariko are left. Add ranged attacks, and kaput, nobody is at a disadvantage.
Fresh to death
I dont know if they need to add timer but i think they should do something about holding block for a long time. Like break his guard to cause Dizzyness, Lose AP after awhile. Lately all i can do to people is just grab combo. Kind of sad and making the game boring. I just play with my friends and is so much better. People online are boring becasue of this.