SwivSnapshot
Explorer
A note of caution- I played in a game with a similar concept. We started in a Gothic setting, moved on to a steam punk setting, then to conventional D&D setting and the changes made it very difficult to develop a satisfying PC. A successful design in one setting turned out to be a complete failure in the next, and since we didn't know what future setting would be, we couldn't plan builds more then a level ahead.
The game folded after level 5 because of player frustration.
The game folded after level 5 because of player frustration.