Adding more historical value to the line.

I think Billy Graham is a very very viable figure out of all of those listed. Gorgeous George would be incredible, too. I'll go ahead and add Barry Windham to that list so we have the original Four Horsemen.

Bruno was a pretty special case because 1. he signed a merchandising contract and 2. he went into the Hall of Fame while the line was active. I don't see Mattel going out of the way to work out deals with any of those guys, so unless WWE works one out with them/their estate, it ain't going to happen.

Anyone past the Bruno/Backlund era just simply isnt going to sell

It will sell in very limited numbers. Like 1 in every other case.

There's LOTS missing still...

Brutus Beefcake, Billy Graham, Bob Backlund, Greg Valentine, Jesse Ventura, Chico Santana, Adorable Adrian Adonis, Big John Studd, IRS, The Mountie, Haku, Sid Justice, Chyna, Kurt Angle, Mr. T, Sting (retro), Harlem Heat, Scott Hall, Fabulous Moolah, A/E Bossman, Tony Atlas, Warlord, Barbarian, Ken Shamrock, Too Cool, APA, Wendy Richter, Viscera, Val Venis, One Man Gang, Pat Patterson, Sensational Queen Sherri, The Genius, Virgil, Shane O' Mac, Koko B Ware, Gangrel, Konnan, Eric Bischoff, Raven, Rhyno, The Natural Disasters, Hercules, The Dudley Boyz, The Steiner Bros, Afa & Sika, Hollywood Hogan, Pedro Morales, Ivan Koloff, King Harley Race, Bobby Heenan, Captain Lou, Freddie Blassie, Gorilla Monsoon, Stephanie, The Nasty Boys & Ken Petera.

BAF's Mean Gene, Slick, Mr. Fuji & Jimmy Hart.

and in a perfect world lol...
Billy Jack Haynes, Killer Kahn, Dory Funk Jr, Uncle Elmer, Outback Jack, Ted Arcidi, The Young Stallions, Boris Zukov, Rocky Johnson, Chief Jay Strongbow, Luna Vachon, Giant Gonzalez, Johnny Rodz, Rene Goulet, Cade & Murdoch, Lou Thesz, Frank Gotch, La Resistance, MUHAMMED F'n HASSAN, Kidman, The Red Rooster, SD Jones, Corpal Kirshner, Dynamite Kid (and Davey Boy), Repo Man, The Fabulous Rougeaus, Kona Crush, Bruiser Brody, George Hackenschmidt, Abdullah The Butcher, Al Snow, Magnum TA, Stunning Steve Austin, Lord Alfred Hayes, Headshrinkers, Mr. America & The Brooklyn Brawler.

I won't buy any 70's figs. I would definitely get a "superstar" billy graham fig. I passed on Bruno. I would love more 80's wrestlers and managers however

There was an Elite Piper in the Legends 2-Packs at TRU. With Cowboy Bob Orton

Backlund and Graham, while probably still longshots, have the best chances of happening from the classic WWWF Champion era. Even then, Backlund would probably have a better shot than Graham as i believe hes no longer under any type of Legends deal with Vince. But of course, there are plenty 80s/90s guys left to cull from. I'd personally love to see a Backlund or a Harley Race (King or otherwise), but i dont know how well they would sell to others on here. We all have preferences that differ on various guys getting made over others, but i think most of us could agree that as for big time main eventers that are still missing, Goldberg, Sid, in a different capacity the Heenans and Jimmy Harts are probably up there on the list pretty high now. Of course theres still some guys that just need to be made no matter their placement on the card. Having only half the original Hart Foundation is probably the best example of that. There needs to be an Anvil at some point.

As cool as a Gorgeous George, George Hackenschmidt, and Frank Gotch figures would be I don't think they would sell the best in todays market.