4* Sig Stones
For most of the endgame players 4* sig stones are of negligible value since most of our 4* are at max sig already
But we get 4* sigs in abundance bcoz of daily events
What if Kabam could introduce a system where we had the option to upgrade our 4* sigs to 5* (Eg. 5x 4* sigs for 1x 5* sig),
& downgrade our 4* sigs to 3* & 2* sigs (Eg. 1x 4* sig for 5x 3* sigs / 10x 2* sigs)