Dammit, TDA, are you still on the fence about Jabba?!
Definitely agree with the gang on Hammerhead and Greedo. They still look great and hold-up very well against anything I've seen that came out later. They're pretty much dead on, screen accurateness wise.
After seeing pics of Jabba repainted, I probably would keep him awhile, then send him off at some point to be customized. As for Bib, I still think he's kinda underwhelming by today's standards, but he's dirt cheap and is alright as part of the scenery. In a display like you'd have with Jabba and all his cronies, I think you can get away with one or two sub-par characters as they'll kind of blend in with the higher quality stuff.
I kinda disagree that so many of Sideshow's old characters are "one and done", though. It's not like Hot Toys has got 100 characters to choose from (and they won't be re-doing anything post IG-88/Boba Fett). If they do two a year, at some point it seems inevitable that they have to go with some of the bigger B-list guys like Jabba or the Emperor. It's just a matter of time, IMO. Whatever people on here say, if Hot Toys did those characters, they'd sell. I'm sure there's a pretty substantial group of people, too, that either missed out on all those characters or weren't happy with the originals and who would pick-up an HT re-do.
Edit: I decided to go on a mission and take a look at exactly what Sideshow has released for the Star Wars line to get an idea of what might have some chance of being realistically re-done by HT. I've excluded any recent characters, stormtroopers, clones and accessory packs/environments. I've put an asterisk beside any I think are most likely to be re-done (mostly obvious choices but some arbitrary -- e.g., Jabba, maybe Qui-Gon or Mace -- and people will have different ideas of what they think will be on HT's list).
Aayla Secura
Admiral Piett
Anakin Skywalker (Ep III) - Confirmed
Asajj Ventress
Bib Fortuna
Captain Antilles
Comander Praji
Darth Maul*
Darth Vader (Sith Apprentice – ROTS)*
Darth Vader (ANH)*
Emperor Palpatine*
Endor Rebel Commando Sergeant
Endor Rebel Infantry
Endor Striker Force Bundle
Gamorrean Guard
Grand Admiral Thrawn
Greedo
Han Solo/Luke Skywalker (Stormtrooper disguise – ANH)
Han Solo (ANH)* – Confirmed but don't know versions
Han Solo (Bespin – ESB)*
Han Solo (Carbonite)*
Jabba the Hut*
Ki-Adi-Mundi
Kit Fisto
Lando Calrissian*
Leia (ANH)*
Leia (Boushh – ROTJ)*
Luke Skywalker (ANH)*
Luke Skywalker (Rebel Hero: Yavin IV outfit – ANH)
Luke Skywalker (Jedi - ROTJ)*
Luke Skywalker (Rebel Commander – ROTJ)
Mace Windu*
Momaw Nadon – Hammerhead
Nik Sant – Endor Rebel Commander
Obi-Wan Kenobi (ROTS)*
Obi-Wan Kenobi (ANH)*
Obi-Wan Kenobi (General – Clone Wars)
Padme Amidala – Ilum Mission (EU)
Palpatine/Sidious Set
Plo Koon
Qui-Gon Jin*
Rebel Fleet Trooper
Yoda*