OH NOEZ! I just realized there isn't an official thread for this weekly feature. So... here ya go! If you want to make general suggestions for the feature or request to use specific characters/scenarios/etc, this is the place to do it. You're welcome to reach out to me via Twitter as well, but I'll be sure to check this thread every now and then, too.
@k4tzm4n: Might I suggest a Mongul II vs Solomon Grundy, both Modern Age (Pre-New 52)? They were both seen together controlled by Grodd in Superman/Batman Public Enemies, but I don't think either have really at all fought each other.
I only throw this out there because you said you were at a loss for DC only matchups that didn't feature ludicrously bad mis-matches. I think both of these guys threw down with Kal-El pretty well, but neither have really even seen each other.
@wolverine08: The dude needs a bit of a break! He had his own 1v1 early in the feature's history and recently won the Zombie Apocalypse scenario. I promise he'll show up again... maybe against T'Challa... but there will be a bit of a wait ;)
I will, however, admit that T'Challa is in a 2v2 match that I've been strongly considering!
@wolverine08: Black Panther vs Deathstroke would kill me. My two favourite characters, so evenly matched. But I don't like choosing Too Close To Call, so I'd have to decide.
As for my own suggestion, how about pre-52 JSA (Obsidian, Citizen Steel, Stargirl, Power Girl) versus Full Power Sentry? I know it would probably cause some heated debate, but I'd like to see it.