Since you can only have 100 mist energy at a time, I think there should be an expansion where you can expand the amount of mist you can hold. You buy a +100 expansion for like 10k cr. Then. you can make up for a lost day of adventuring by having twice as much energy the next day. You can expand it to 1000 mist at a time.
Yeah.
initial thought upon reading the title: "oh no, not another one of these threads!"
this as been discussed since the dawn of SK
the primary issue here is that this would cut into OOO profits (aka how this game is still running up until now) adding capacity to a resource that is free takes away incentive to buy from OOO. OOO makes it possible to skim by without buying energy from them, through the use of the energy market, but they make it harder because of energy price inflation.
1000 mist energy is enough to craft a piece of 5* equipment, which is never a good idea, since people would stop playing to build up the mist just to craft.
10k CR is chump change, if anything it needs to be 500k CR at least to make this even the slightest bit viable