It would be fun to see more of the un-used, underwhelming, unappreciated, roster-clogging heroes get an additional boost in events.
It's been done in the past. I recall Sandal getting a toon-specific boost recently.
Something to the extent that dwarfs get 400% H/P and Sandal an additional 400%.
Enough to make it worth considering including him in the team.
May be nice for newer players that don't have every 2/3* to fill out a team, and make it seem worthwhile to keep meh toons around to maybe use once and a while.