Just once, though, I want to see Dr. Cole lace 'em up. :D
Let's see....I wouldn't mind an SoM reunion, maybe outside of EWNCW since Slayde is in IWA, if he should need the help or later on want to focus on the tag team division there, Abel is the perfect partner for Slayde and would certainly own the tag teams there ;) (naw, we'd have some great competition there). If that can't be done, then there is a short list for people I think he could partner with but I wont get into that now.
I'd be shocked if Kyojin one day turned heel (again, he started out heel :p). It would have be done right, with a big build up that leads him to question whether he wants to continue being a fan favorite or not. That'd I'd like to see.
More fed unity, in the sense that a character like Seraphim could be in JBW or IWA or Shuri could be venture to EWNCW once again (if only for short programs in which the user and creative are happy) to not just stick to idea of being in one fed without the need to jump ship. There no fed rivalries, no need to be I'm (said brand all the way or for life) when you can go venture the depths of other feuds that could be if you decide to join another fed (again if only for a short program). That's just me.
I'd personally like to see The Sins, with more exposure. It's been one of my favorite, favorite storylines to do since I joined fedding and would really love for them to be on more of a display.
That being said, I know the supernatural thing is being looked down upon by many as I've read through the pages here, still I think Sin is one of the more unique supernatural groups and storylines out there today so we could do fine and maybe interest people in that which is supernatural again if we get the chance. We do go over the top sometimes, but we're usually talked about be it in a good or bad way, so we know the interest to see what Sin does is there, question is to what degree?
Heel turns for Rage, Tommy Thunder and as previously stated Kyo would be great to see.
Face turns for Van Hooligan X and K-Jammin, among others would be great ot see as well.
That's about it for now, if I think of more stuff I'll post it.
No cross fed stuff or wars but more collaborations. As stated at top of my comment where Abel (from EWNCW) could help or want to team with Slayde (From IWA) again outside of the norm EWNCW platform.