Who won't get an ultimate due to lack of accessories?

Right now, of the names you listed, I would say only Luger, Sid and Booker T would have the chance of getting an Ultimate Edition figure. For Sid, it would be a bit tough, as he didn't have a lot of accessories or ring gear that could be added. Though, they did make the Diesel figure and all he came with were extra hands and the vest, so they could do a 1996/97 Sycho Sid and include his entrance vest, add a few heads, and throw in the WWF world title belt he wore during they time.

Booker T is interesting, I don't think they would make a Harlem Heat Booker T, so that leaves his singles run in both WCW and WWE. I stopped watching wrestling around the time he really became a star in the WWE, so I'm not sure about his attire choices. I remember him wearing sweats and t-shirts for certain segments. Didn't he wear regular clothes for the shopping center fight with Stonecold? They could throw those clothes in with any ring attire look he had from that time.

As for Luger, the most likely Ultimate Edition would be his Summer Slam 1993 look. It was a unique attire that he only wore once. They could do multiple heads, hands, and the USA jacket he wore around that time (also worn when Undertaker was named as the 4th man of his 1993 Survivor Series team). Others have said that they'd want his USA shirt and zubaz pants that he wore on the Lex Express tour added. If they were to go the WCW route, he did wear a strange looking entrance gear during his first run with the company, they could add that along with multiple heads, hands, and the WCW replacement world title or US title.

Here is an image of him in the entrance gear, and the prototype of the galoob figure that was going to have it as well:



He also had a robe made when he was a member of the 4-horsemen, I believe it was made by the same person who made both Flair's and Valentine's robes. This could also be an option:


I don't think that Mattel does multiple looks (2-in-1) for their Ultimate Edition figures, but WCW Luger could be an option. He wore the same black gear with white boots in his 1st run with WCW as well as his 2nd run. They could include the entrance coat/cape thing from the photo above (or the robe), the black trunks and kneepads attire with white boots, a younger head for late 80s/early 90s, and an older head for 1995/96/97. They could also throw in the TV or US title from the late 80s and the big gold belt or TV title from the mid-late 90s that he wore. 
 
Late 80s look                                                                                          1995/96 Look

True, they could throw in a NWO Wolfpac tank top and some removable jeans to get that era as well: 

So I'm curious who would never get an ultimate due to lack of accessories ?

Example

Sycho sid he never has shirts he basically wore only black plus we have his only 3 real attires which is a shame because I would think an ultimate would be awesome. But who do you think would never get an ultimate as they don't have enough toyetic appeal ?

Examples

Lex Luger wcw look maybe USA but not wcw
Booker t maybe King Booker?
William Regal not big enough of a name
X pac
Brian pillman

No one should be off the table due to lack of accessories.

Diesel was a CROWD FUND figure and had 1 head and vest as accessories. (I don't count hands has accessories anymore because ALL figures save for basics come with hands)

Mattel went in their bag to give the first Kane a cape. The 2nd Kane comes with just an extra head.

Sid could come with 2 heads, a winged eagle and a vest and id still buy like 3 or 4.

Xpac could come with 2 heads, a pleather jacket, and a euro/tag title

123 kid, can come with 2 heads, a baby bottle, a bag of money and a tag title. Or just 2 tag titles.

Basically, it can work.