For the last 5 years there has been a recycling element to gimmicks, though I'm not seeing many arcs being redone as the landscape for titles etc is totally different. The 80's and early 90's were pure feud based, not titles,MITB etc. Many have failed but some have worked. The most successful ones are hybrids rather than aping one figure from the past. It's more interesting though to look at the position people take on the roster, for example Wade Barrett is well on his way to taking the Ted DiBiase slot on the roster, one of the main heels but not usually in the title picture...Cena is in the Hogan spot and Orton the Savage...Sheamus is in more the Warrior slot and Bryan the Jake slot.
Here are the comparisons I see in gimmicks:-
Sandow - Mix of Hunter Hearst Helmsley and The Genius, I wouldn't even be shocked if they start bringing him out to Ode To Joy like Trips once had.
Ziggler - Mr. Perfect, he is not the new Rick Rude (even though he wants to be) but his look, attitude and "show off" persona are pure Curt Hennig. Like Perfect he oversells but in a good way. He is also in Hennigs roster spot, he might move on and be a long world champ, but could easily stay upper mid his whole career.
Zeke - Ahmed Johnson, he looks like him, works like him and pretty much had the same gimmick as IC champ. They started him off more like Bad News Brown, why they didn't stick with that I have no idea. Position wise he is in the scarily named "Tony Atlas" position.
Zack Ryder - Pure Brutus Beefcake, a fun babyface for the kids, sure he's not cutting hair but the exaggerated movements, colourful attire and usage are similar. Zack has his show, Brutus the Barber Shop.
Santino - Likewise, he takes a bit of The Bushwhackers (the goofiness), a bit of Dino Bravo (the overinflated self-assessment of his abilities) and George Steele (the Cobra and his "crazy side). Position wise he is probably Honky Tonk Man, always gonna be in the mid-card but steps up occasionally for a big match.
Kofi - Mix of Junkyard Dog and Shawn Michaels - He has the highflying "Rockers" era moves and babyface charisma but uses a lot of JYD in his schtick, replace "Boom" with "Woof" and you get the picture. He's also about the same level the Dog was in the late 80's, not main event, but close enough to it that he will never drop.
Miz - Very interesting case cos he is the guy who perhaps fluctuates the most in whose spot he has. Gimmick wise the nearest is probably heel Piper from the mid 80's... in terms of spot, at this moment he is probably in the Iron Sheik role, someone who had the title once, and is used more as a heat magnet than a serious main eventer.
Cody Rhodes - He is closest out there to Rick Martel with the pretty boy/serious heel edge but not quite Rick Rude level yet. He will have more success than both guys did in WWF but I still don't buy him as a World Champ. In time, he could end up in a position very similar to Greg Valentine as a heel or even his dad as a face...someone main eventing, there or there abouts but never really "the guy".
Undertaker - he is in the Andre position right now, writes his own ticket, loses when he wants to not when told and is the most feared guy on the roster. He is also the guy who should be jobbing and voluntarily giving that spot up, but probably won't. Andre got forced through health, Taker seems determined to hang on as long as possible.
Cesaro - His gimmick is again a mix of The Genius, Mr. Perfect, Rick Martel and Rick Rude. He's the guy I think could be closest to Rude in the long term, he has the women (Aksana will get replaced, you watch), the ability and that unique offense Rude had, even the cheesy entrance music. He also has that intangible "I should really hate you, but I can't" quality. Get him a decent manager (bring Trish back as a heel or Flair)