After coming through my second year of premier membership I kind of feel duped at the word "premier" especially when it comes to the vault.
I personally feel that even the Free Daily keys outshines. the vault in reward potential and after doing it every month leaves you kind of feeling unfulfilled after completing the vault.
I think the reward chart needs an overhaul with that of the reward potential of the TH Rewards rather than the donkeys back end of it.
I titled this as "premier membership" as a whole for feedback from others in the community around premier and thoughts on what could be done to improve it.
when you do the vault, do a couple small, then large, then make sure to start the biggest one last. as long as you started it you will get some reward.
So i end up doing that big gold one when i have about 15 seconds left. i dont finish it but still i end up with more items overall than if i make sure to completly finish it first.
The richest person is not who has the most. It is who Needs the least.