Any idea if roto grip will come out with a new ball to add to the cell line?  The nucleus core is unreal.

There may be a release of an international Cell at some point, but I wouldn't expect to see another American Cell. That core is pushing a decade old. A mutant cell might be a possibility I guess, but I still doubt it.

+1 on the defiant core balls,  the Soul and the original Defiant sold me in that line,  but as mentioned with companies' turning back the clock and going back to cores and designs that worked and sold in the past;  anything's possible.    Stay turned....

thought that the No Rules line replaced the Cell line as the new HP4 balls

Maybe we were used to the end of the skid, the eternal and the no rules all being around...We felt like roto was going to be like storm and have multiple high end lines. 

Makes since...We need a Critical cover no rules next please.

A No Rules Hybrid after the pearl would be awesome.

Would bet money it's a Hybrid coverstock next.

+1 on the defiant core balls,  the Soul and the original Defiant sold me in that line,  but as mentioned with companies' turning back the clock and going back to cores and designs that worked and sold in the past;  anything's possible.    Stay turned....

I still use my Defiant Soul regularly and it still kicks azz! One of the best balls with that core/cover match up perfectly with me!