Trying to rationalize or justify the idea of all these characters fighting against one another in various locations is probably as difficult as making the reverse happen. Two of the characters did not even appear in the trilogy. The combo system of a fighting game is the first thing both novice and veteran gamers attempt to master, the former through button smashing and the latter through study, practice, and memorization. Unfortunately, both will have a seriously difficult time. The combo system is slow and ineffective.
Timing is so critical it becomes a practice in futility.
The ability to draw and sheathe weapons is unique. There are times when I did not want use a weapon. Yet, when using a character with a light saber, I would draw it immediately and never had a reason to sheathe it. The only thing shorter than the canned Star Wars intro is the unbelievably short ending sequences. This is hardly encouraging to spend the time to beat the game with every character.