So, we already have the option of running F2P on mist and buy CE for crowns, or buying CE with cash, but both options still put a fixed limit on the amount of adventuring we can do.
What if there was a monthly subscription option instead? For, I dunno, $10 per month, you'd get:
Mist limit increased to 300, and about 4x regen rate so that after playing for 6 hours or whatever to burn through all the mist, you'd be refilled by roughly the same start time the next day.
A pair of trinket and weapon slot upgrades.
A random accessory or something, I dunno. Some pack freebie.
Basically it'd be a package for people who want to do a lot of hardcore adventuring, but still want to feel like they've "earned" their CE to upgrade weapons and whatnot.
increasing mist and regen rate? 4X regen would mean it's giving you 1 every 3.3 minutes, meaning a full recharge is only an hour and a half. And 300 mist storage?
I dunno... I really think this is overkill, and ill conceived :\