I gave up on playing X-Wing earlier (more of a long-term break) this year to focus on Warmachine and Armada. I also stopped playing Netrunner due to having noone to play with. I expect to pay ~$1000-1500/yr on tabletop games and try to keep what games I play balanced to that.
I have 2.5 boxes of destiny already, with another box coming in a week - it looks like we'll have a semi-healthy group of 6-8 dedicated players and again as many on the edge here playing it that is mostly players from other FFG games (X-Wing, GOT, etc). I think we'll come close to hitting the critical mass for collectability and having a semi-healthy secondary market (for at least trading).
Unfortunately: I think Destiny will not be well balanced using a collectible model beyond a year or two unless they go away from the rare-only dice distribution and find a way to have non-rare dice cards.