Prevent confusion from whom?
I think we should let the et.wp community vote on this change instead of letting Gerard push it on them.
Võro Wikipedians know to go to http://fiu-vro.wikipedia.org/, non-Võro Estonian Wikipedians know to go to http://et.wikipedia.org/
Introducing a new URL for Võro is one thing; forcing Estonians to have a new URL is entirely different and ridiculous in my opinion.
Mark