I'm only going to use Gen 6 Pokemon anyways, so it doesn't really matter to me if I can transfer Pokemon from my old games or not because I'm not going to be doing that unless they decide to do another thing like using the shiny legendary beasts to get Zoroark, and if they do have something like that, then the option will exist anyway.
Either way it's pretty irrelevant to me. If it's not there, no complaints. If it's there to help serve an event purpose, I'll use it for that.
Don't forget to check out my MegaTen themed webcomics at http://www.drunkduck.com/user/Strain42/ (Currently Updating: Persona 4TW Add-On M-F)