I wouldn't have a problem if they did WM30 as a big nostalgia show by bringing back a bunch of top stars. People can complain about the younger guys, but it's the 30th show, we can make an exception. Here's how I would put a huge "Clash of Eras" show:
1. United States Championship vs. Career: Goldust vs. Cody Rhodes (c)
Have Cody win the US title, and then have Goldust turn on him. He's jealous of Cody and puts his career on the line to take the title off him. The US title could be handled like a big deal, plus, it's symbolic because Dusty held that title too.
2. Diamond Dallas Page, Scott Hall and Jake Roberts vs. 3MB
Build up what DDP has done for these guys on-screen. It could be a real feel-good story for the fans, especially when we see these guys have one last big win at WrestleMania. Induct them all into the HoF as well.
3. Mick Foley vs. The Miz
Mick has gone on record saying he wants to work with Miz. Have Miz turn heel again and work a ruthless match with Foley at Mania. Foley can do for Miz what he did for Edge and turn him into a huge star.
4. Rey Mysterio vs. Sin Cara
Have Sin turn heel and blame Rey for his shortcomings in WWE. This could be a big feud and could be huge if they let Sin cut promos in Spanish to his Mexican fans telling them to watch Mistico beat Rey's ass at WrestleMania. He can cut promos in Spanish and refuse to learn English, maybe have Rosa translate for him.
5. WWE Tag Team Championship: 30-Man Legends Invitational.
Every superstar is eligible for this huge battle royal as long as they get a legend to tag team with them. We'll have 15 teams of superstars and legends with one of them coming out on top to win. Kofi/Koko, Swagger/heel Sgt. Slaughter, Kidd/Bret, etc.
6. Big E. Langston vs. Brock Lesnar
Use Lesnar correctly and have him put over new stars. Big E can be HUGE after a feud with Heyman and Lesnar. If he pins Lesnar at WrestleMania, there's no way he doesn't become a big star.
7. WWE Diva's Championship: Lita vs. AJ Lee (c)
AJ Lee looked up to Lita, but when she announces her intentions of coming back for a Diva's title match, AJ turns on her, and the match is made. Make it a Lumberjill match with a bunch of divas from the past and present around the ring.
8. Triple H vs. Daniel Bryan
This match needs to happen. Bryan needs to finally get his revenge. Put Triple H's COO job on the line and have Bryan tap him out at WrestleMania. Follow up the story with Vince taking back control of WWE and tormenting Bryan himself.
9. The Undertaker vs. Bray Wyatt
This feud writes itself and it can really build Bray into a big star. Make it a Buried Alive match and after Bray loses, he can cut eerie promos in his return later in the year about how he came back from the dead.
10. World Heavyweight Championship Open Invitational
The World title is vacated and every former World Champion is invited to this big match. Sheamus returns for it. Booker puts his boots on for one last shot at the title. Orton, Christian, Khali, Ziggler, Jericho, Show, Kane, Henry & Del Rio join too. Bring back Goldberg and that's a huge 12-man battle royal.
11. The Rock and The Usos vs. The Shield
Rock will probably not want to get injured for the third straight year right before a big movie so why not put him in a tag match with his cousins. He can really help them get over as big stars, plus settle his unfinished business with the Shield. I can see him getting the win, but have Shield "take him out" the next night for some huge heat.
12. John Cena vs. Hulk Hogan
This won't be a classic. Keep it short like most of Hogan's matches. 8 minutes and have Cena counter the legdrop with an FU and put Hogan down. This will bring in some big buyrates even if it won't live up to the hype.
13. WWE Championship: CM Punk (c) vs. Steve Austin
Punk wins the title, turns heel again and goes back to being the Straight Edge Messiah, just so Austin returns, wins the Rumble, and beats his ass at WrestleMania. Yeah, I'd have Austin win. He deserves one last big hoorah. Have him lose the title the next night, but this win could still build up to a huge Cena/Austin match if Steve wants to go another round.