On several occasions there are just not enough players on to finish the opposing team in onslaught. My team misses out on the wins because of this.
I’d propose the unused energy be transferred to some type of communal use after a set amount of time has passed. That way the players that are actually on can use it instead of the players who aren’t even online.
Only 3 players on the faction are online because of timezones. Those 3 faction members use their 4 energy each and win 12 out of a possible 30 fights. After a set amount of time the remaining energy from the players who have yet to participate transfers to a communal use for anyone who is on, allowing the faction the chance to finish off their opponent.