Basically you can switch at whim (out of combat) between roles (classes), and allow sharing of certain skills/spells that cross-over. This effectively removes the need to destroy your advanced character and you can choose to play/advance any one class and switch back and forth.
And here I thought I was the only one who played RIFT before!
I really like the idea of being able to 'switch' between your current version and your re-incarnated version. Maybe a special potion or little 5 minute quest or something could be available so you can be useful while groups are going and switch back to solo/2 manning when no one is around. With so few people playing, I feel like having even 1-2 people re-incarnated and level 12 isn't going to help zoning at all.
Overall I think I would enjoy this system. I would certainly shy away from re-incarnating if I had to retrain all my skills again, even if they were faster. If I could just get a single learn on each skill at each level and it would immediately max out, ok. But there's absolutely no way I would re-skill again. Just imagine for a second, how much actual
TIME would be spent training skills while afk a 6 time re-incarnated Shaman would take? It's already obnoxious to legend a shaman....I would hate to do that 5 more times, regardless of the benefits.