Thanks for being like the only one to respond to this! We all know that one of MGM Studios downsides is the haphazard method of placing attractions and shows wherever they can fit regardless of what style they are. Having a Star Wars land with various planets in one land would also be adding to this problem.
So here's my proposal if there's the space for it, They need to have a STAR WARS GALAXY as a section of the park. Maybe pick 3 of 4 planets max and separate them in a way so that they don't face each other exactly or clash in anyway. Think World Showcase but with Star Wars planets maybe?
As you said, Kissman, TATOOINE is a must. Jabba's Palace can be one of the architectural landmarks of this section. A dark ride of "Pirates" calibur can be the anchor attraction where you board various Landspeeders and go through different Tatooine environments... from Banthas to Sarlaac Pit, Jawas to Mos Eisley, with Jabba the Hutt animatronic and an escape from the Rancor being the finale. Having a real Mos Eisley Cantina here is a no brainer too. Would be cool to see photographic opportunities with large scale Dewbacks and Banthas and maybe a Jawa Sandcrawler as well.
Another E-Ticket would of course be a podracing attraction.
Tatooine walkaround characters: Luke, Cantina Aliens, Jawas, Sandtroopers, Jabba's Palace aliens.
Planet #2 should be CORUSCANT, the capital of the Republic. Here's where the imagineers and ILM can go nuts with various skyscrapers. Potential places to visit: Jedi Temple, Senate, Dexter's Diner, Nightclub, etc.
Possible attractions here would obviously be the Jedi Training Academy, various speeders or ships. Here is where the original or updated Star Tours would best fit. Not with an Endor set but as an actual space port. Another attraction could be a variation on Space Mountain. You board air speeders and fly through the skies of coruscant. All around the track are other ships passing by, buildings, aliens, neon signs, everything.
Walk around Characters: Anyone and Everyone, especially Jedi and aliens and droids
Planet #3 and probably should be the final locale is ENDOR. Reason being is that it's a certain nod to the old Star Tours set up and also because Ewoks are fun for picture taking, and here is where they can have some impressive AT-ST or AT-ATs looming overhead. Speederbike chase is an attraction possibility but I think what might be cool is something a bit different. Endor can what appears to be the smallest planet locale, but actually the same size. There should be an attraction where everyone boards a landing shuttle (baby motion simulator) that lifts off from Endor but goes to the Imperial Star Detroyer (or Death Star). Here is a big lair to explore that's themed entirely to the Imperials.
And another thing that would be cool is if the Star Tours ride that took you to Endor exited in Endor... and the star tours that took you to Tatooine exited in Tatooine.
ANNNYYHOOO... just some random thoughts. It would be fun to play in that world that's for sure.