From my perspective, If 2XKO adds new fuses in the future, (based on other fighting games like MVC, Tekken, Soulcalibur, Guilty Gear, etc.) would be:
Install Fuse: temporary powered state (faster moves, stronger specials, enhanced combos)
Momentum Fuse: offense builds speed/damage, defense slows momentum (rewarding pressure play)
Reactive Fuse: perfect defense or parry-style actions create counter or assist advantages
Stance Fuse: switching between 2 modes mid-fight (rush/control or offense/defense styles)
Loadout Fuse: pre-match modifiers (speed, damage, assist strength, etc.)
Soft Cancel Fuse (speculative): limited move branching on hit/block/whiff (not full cancels, but adaptive follow-ups)
In my opinion, most fighting games already use versions of these systems (install modes, rage systems, assist mechanics, etc.), so 2XKO expanding in these directions would make sense for deeper team identity and playstyle expression.