unfortunately if they really did go to wwe they would probably be buried. but in my dream world, it would be awesome to have really classic matchups with aj styles and morrison, or roode vs cm punk, cena vs angle i think would be a good matchup. i think if built up, and if they were both on the same page, orton vs anderson would also be a good feud considering there was real life animosity between the two. i know this is one of the reasons why sting never wanted to go to wwe, but for me, talent is talent. i don't really care if you worked for another company, if you're good, you should be utilized. while hogan built up wrestling, he is long past being relevant, and is not helping tna. tna could be awesome with the x division, but the company still uses hogan and the older generation too much.
wwe is not doing the greatest when it comes to building up there young stars, but guys like ziggler, rhodes, r truth, the miz, evan bourne, and kofi are kind of being built up right now. you also have cm punk who's being built up (for the most part) and they have a young champion in alberto del rio. his championship run isn't anything remarkable, and i don't think he's being built up well, but at least it's someone other than hogan in the spot light. i also like how mark henry is being built to be like a yokozuna type. also right now, you have sprinkles of the rock who i think generates a ton excitement and the only real wrestler to make it out of wwe and still retain popularity/relevance. there's also speculation that austin may return for a match, which helps build excitement in the iwc.
i think the sudden loss of edge, hbk, undertaker (to a large degree), and a i think a few other guys really took wwe suddenly and they were forced to build stars instead of doing it slowly. i think if wwe built up the championships more, that would help make the wrestlers and their charcters more important.