Now they're thinking pushing the game to "Full Release" without all classes?!?!

Not having all classes would be a bummer but all acts in the Campaign at least.
Look at it this way ... Free to Play game so still a win... a League in the future that doesn't exclude their players from new Classes and Locations... we don't have to buy multiple expansions

I'm excited to see what they come up with over the year.

Well Its free to play anyway when full release

I don't even care about full release. We know they will be releasing major patches/new leagues every 4 months or so. The classes will come.