[Guyver]

You can't come back to life. Once someone dies their brain starts to decay from not functioning. Memory and intelligence start failing. So if you were to respawn as a "flash". You would be even more dumb than before.

The neural copy isn't a bad idea but it is too much to add to a story. Plus if lunarites were in everyone and everything it wouldn't be a rare substance to fight for. The game is about two factions(races) fighting for survival and the lunarite energy source.

Teleporting would defeat the purpose of having trains for transport within the city. If you don't lose anything when you die just kill yourself somehow and teleport where you need to go. Nah, too much trouble.

Clones would be a bad idea because SWBF2 is based off the clone wars and the sith reign.

None of us know exactly how it will be done but it's a good bet it won't be any of that.