That's an easy fix: don't lock Blue Mage abilities in Savage content. Problem solved. Come on it doesn't take much creativity to find ways of fitting something like BLU into FFXIV's class structure. RDM and BLU could also serve just fine as hybrid jobs if they were forced to lock into a specific role for group content. Plenty of other MMOs already have this exact system. It's been done before yet people constantly act as if it's impossible.
As for the Fan Fest, I'm not sure why there's even any discussion of what they will or won't show. Why not just look at the last three fan fests and what was revealed at each regarding Heavensward? The Vegas event will likely give a teaser of the CGI trailer along with some overview of the theme of the content and such. The job reveals will probably be reserved for later but they may be teased as Yoshi did last time.
