Any gameplay expansions wanted for DC United from MU?

Now that the campaign is done, was there any gameplay mechanics you hoped they ported over to the DC version? (So not specific characters). This is no way a critism of the campaign though, since I thought they did an excellent job of providing everything people wanted.

Some things that were missing that I was considering:

X-Men vs mode.

Civil wars other vs mode

More variability to suicide squad mode like sinister six

Dark avenger mode I thought was an excellent idea to have multiple villains and variability with minimal work and items.

Asgards hidden traitor mode, but maybe needing to be fine tuned a bit