Theres a few legends they should have put in, instead of Kane and Undertaker (seen as how there exactly like there modern selves.)
Owen Hart (Just to team him with Bret)
Big John Studd
Ricky Steamboat
Terry Funk
Earthquake
Honky Tonk Man

Any of the Von Erich family
Doink the Clown
Yeah my list isn't great but there all I could think of right now.
Who would you guys rather have?