Just from a pure production standpoint, it is way easier for the dev team to create a demo reel featuring only female viera since Fran's model is pretty much done and all they have to do is swap the head out (which is pretty much what they did). They didnt have to do a whole lot on that end to put together somethign that shows off Viera. So, atleast in the current state of things, its not really a pandering thing but rather just simple pragmatism.

We also have to consider we have 1 more fanfest to go, and theyre not likely to show off ALL the things before then. It is likely that we will see a Male Viera preview in the last fanfest as well as the dancer job class (I think its dancer right?) among a few other bits and things.

People can call this stuff pandering if we get to the xpac to find out its only female viera. That would be an oddity since I think it was YoshiP who was against gender locking races in the first place (He put in Male Miqote I believe with ARR, but I could be wrong so take that with a grain of salt.)