I was going to say that turning renaming off is probably best. But... if everybody knows renaming is allowed and others might see your renaming scheme and give away who you are, you will need to consider a new renaming scheme for this game.
For example, naming your units "BOB-WATER DUDE" like you've always done in other games will be a give away to the regulars (not me) who know your naming convention.
And this means if I name all my commanders "JURRI-AIR DUDE", JURRI-WATER DUDE", etc. the best assumption is I'm not Jurri, but someone trying to masquerade as Jurri. Unless I'm really Jurri.
So I think renaming is okay now, because it could be interesting (as long as it's not abused), and is needed/preferable for nations with randoms.