Most of these would work, but I have to say I do like the Lightsaber Form idea. Perhaps combine it with different Force types as well.
In fact, anything that reminiscent of ATPG's old Star Wars game would be pretty great.
I would stay away from the Learning stat idea, as it would easily become the most important stat in the game.
As a rule of thumb, if you can design a system where, the total number of stats held constant, no single stat spread is unbeatable, then you have a fairly well-balanced system.
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