I'm kind of torn on this. Unifying the WWE titles will give the championships more prestige, but I'm not so sure it could be a good thing, especially when it comes to the WWE and World Heavyweight Championships. The last time WWE had an Undisputed world title, only the cream of the crop were able to the wear the gold. The Undertaker, Triple H, Chris Jericho, Hulk Hogan, The Rock, and Brock Lesnar were all WWE/WWF Undisputed Champions. Those are some big names, and while I do strongly believe John Cena, Edge, and Randy Orton will become Undisputed champions, what's going to happen to everyone else? If only the elite in WWE are going to be champion, then what's going to happen to the rest of the mid carders in WWE? Will we ever see Swagger and Punk become world champions again? Will The Miz be able to shine in all of this? Also, you have to factor in Triple H and The Undertaker(if he's still around). You know there's a good chance they might become Undisputed champions again, and Kane could be a wild card in all of this.
Unifying the Women's titles is a good move on WWE's part. The women's division on Smackdown is pretty dead, because it's just become LayCool, and everyone else, and there are very few Divas who can go in the ring in WWE, so I really don't have a problem with WWE doing this. I have similar feelings when it comes to the tag titles. WWE really doesn't have too many true tag teams. The Dudebusters, Archer & Hawkins, The Usos, and The Hart Dynasty are the only true tag teams in WWE. When they decided to unify the belts last year, I didn't have a problem with it, because Vince doesn't really put too much emphasis on tag team wrestling these days, so having two sets of title belts wasn't really necessary. Unifying the IC championship and US championships is going to make competition a lot more fierce in the mid card.
Unifying all of the championships can bring a lot of prestige, but at the same time, I think only the best of the best are going to wear these titles. This is going to be a big deal when it comes to the world title, because I seriously don't think just anyone will be given a run with that belt, and if your name isn't Orton or Cena, then your dreams of being a world champion in the WWE might not come true. All of the other titles will make the mid card look stronger, but again, I don't think we'll see just anybody be given a title.