Godsend maxed, now what?

so all toons have maxed Godsend, now what? Do I waste it all on the useless, unusable Heroes? my main? which is always the weakest? is considering another lvl to Godsend an option you could ask the devs about? right now all are lvl 12, and im sure im not the only one.

Godsend is a consuming/regaining thing, so where do i spend them?