Greetings all.
I will add my two cents and observations.
First, I've never played SWG, so anything here mentioned about that game is based solely on reviews and other's gameplay descriptions.
My only real experiences with MMO's are Air Warrior 3 and Star Trek Online. I will not hijack this thread or go off topic to describ them, but needless to a three faction, winner takes all format would seem a perfect thing for a major sci-fi based conflict.
Having said that, and taking into acount the intellectual property (people in STO seem to forget, in the process of making their demands, that that game is based on an intellectual property and goverend by the owners and established lore of said property), SWG type gameplay wouldn't fit into this time period. We have a wealth of books based in that time period that greatly detail the days in the life of fairly normal people or the fairly normal people the main characters run into. I wouldn't be surprised to find an interior decorator going about his bussiness, not realy caring about the relatively small insurgency the Empire is trying to squash. It's like today, people going about normalcy while militaries are engaged in operations elesewhere.
SWTOR is, for all intents in purposes, WWI/Inter-war/WWII/The Phoney War/Renewed Conquest/Cold War/WWIII in space, and has practically been advertised as such. Set during a time that has little written about it in the grand Star Wars lore, two Super Powers and their proxies trying to undermind or outright destroy the other at the expense of hundreds of worlds and billions of beings. I'm not sure if any developer is going to risk SWG type MMO in a setting like this. Honestly how many of the newer generation would create a Sith Empire interior decorator, or a Republic Bantha hearder?
Ultimately, times change. Just like 40 years ago, you could get away with a G rated war movie, or a slow paced adventure flick, or a comedy film without slapstick, gamers change. Many consider SWG post CU/NGE a complete failure (although it did last a while). Many younger gamers (and even some older ones) play Star Wars to have lightsaber battles, dress as Stormtroopers, shoot lighting, do Jedi mind tricks etc. The type of game SWG was really is more of a niche market nowadays.
Now, warzones and warfare like AW3 (or what those described in Dark DAoC), is perfect for a setting like this, and Bioware missed the mark with that, and will have to scramble to save Illum and maybe add other planets, maybe even revamp space combat and add space based warzones.