No, the most popular version will get the most support. You still have the problem that a forked chain stops being compatible, so if a node recieves coins in the new chain after the fork, the old chain won't acknowledge it. This is a big practicle barrier to implementation.

You could harvest a large number of new chain coins before you go public, and offer an exchange service, but that would involve you owning alot of new-chain bitcoin, which would be a concern to people switing in.