I was never quite sure why people asked for level ups in Beta, at least in the post-Wentworth's era. With unlimited buying power, it was so easy to get all the IOs, XP boosts, and everything else you'd need, that leveling was even easier than ever there.
But if/when we do get CoX back, I hope they open immediately with i24, as there were so many very cool things in that issue that I think it would be a shame to postpone them till later, especially as (in post-Freedom CoX) there was a logical and cool story extension for the early Atlas Park/Habashy/Shining Stars arcs.
Speaking of, one of the ideas that came up on the old forums towards the end that I thought was really cool was to try and "re-task" some of the zones towards more story oriented paths. IE, rather than just have the one "origin" path from the post-Freedom era on the Villain and Hero sides, open them up a bit more to other routes (sort of like the pre-Freedom era), with routes for Rogue and Vigilante paths.
Something like: King's Row and Brickstown as primarily "Vigilante" area; Cap au Diable as a primarily "Rogues" or "Rogues and Vigilantes" area; Founder's Falls as a "Hero" zone; etc.
One of the things that I most loved about Praetoria (my favorite area) were the side switching and "going undercover" storylines, and I'd love to see more of that worked into the main story zones, too. I think that Kallisti Wharf was planned to do something similar, in that it was a co-op hero/villain zone, but I'm not sure.
(And I still would love, love, love to see a co-op hero/villain underground Oranbega zone)