There should be an option to buy the game. By actually buying the game it will put a limit of Minimum 10 Mist Tank so it cannot be deducted further[see blow for full description how it would work] (still 100 mist tank as hardcap). This option would cost _as much_ buying any other game. You would still need to have CE/Etc to craft things but you can endless dungeon crawl if you like.
This could be a good option for people that wish to lifetime upgrade their account for a big chunk of $.
How it would work: Below 10 energy your mist regenrates is increased to 1 point per 10sec until it hits 10. If it cant drop below 10 it will be able to be abused and count as infinite.
not a bad idea honestly :q i like it. you could just farm lvls forever tho and sell mats/cr for ce :q