I used to play Mortal Kombat Trilogy for the PC all the time back in the day, but I dispute that MK Trilogy is 'way' better. Certain things about it always bothered me that MK Trilogy X seems to have fixed.The original Mortal Kombat Trilogy is way better, but if you want a version of MKT where you can want any character you wish to have, then I'm okay for people who play Mortal Kombat Trilogy Extended (MKTX) with basically MK4 characters lumped in with MK1, MK2 and MK3 plus UMK3 characters along with MK:Mythologies exclusives like Sareena.
1. The bodies in MK Trilogy do not fall after being decapitated. To me, it looks rather dumb to have a person standing upright with his/her head lopped off. It looked cheap, as if Midway did not want to go to the trouble of animating the characters' headless corpses falling to the ground, as they had previously done with the first Mortal Kombat, and MKII. Decapitated bodies fall to the ground in Mortal Kombat Trilogy Extended.
2. In Mortal Kombat Trilogy, the 'Pit II' zone had no stage fatality. I suspect that this is because, once again, Midway did not want to take the time to draw up more character animations for characters falling down the Pit II. The Pit II stage fatality works in Mortal Kombat Trilogy Extended.
3. Running MK Trilogy on Windows 7 just isn't that reliable. I ran the Windows Vista patch to allow MK Trilogy to run on Windows 7, but even then, I can only run the game in a windowed mode. If I run it full screen, it will crash almost immediately.
For those reasons, I prefer MK Trilogy Extended, even with its bugs, and being unfinished.