Nah, just do like Duncan MacLeod...live life large, and use your real name freely for hundreds of years. No problem.![]()
Back before governments started to keep records electronically you could do that if you switched locations for a couple of decades and waited before all the people you knew had died. It is a plot point in the movie though that Duncan assumes the identities of passed infants ( yet didn't think of trying to change his handwriting for the signature, technology wins this one

I am positively excited about the reboot with Cavill. For one he knows his way around movie fights with swords, so it should look spectacular with modern fight choreography and the special effects will of course also look better. As to the original charm and what made it so great - that will be much harder to achieve. Try to find someone with the charisma of Connery in his prime ( older Sean Connery was amazing) or the seamless blending between present and past scenes ( though that's just a technical thing and easily replicated yet felt so awesome). I don't know if they will keep close to the original script or do their own thing - i'd prefer the latter and for them to make their own movie within the framework of Immortals battling each other through the centuries.