This is a large economy system, for only if u have fateuhc, fatemeetup, and uhcgames.
This is too good addon for peoples which bought these 3x plugins. (good marketing, and next reason that buy 3x plugins xD).
I suggest add permament item shop to uhcgames, then players can buy permament item at fateuhc and fatemeetup.
Item which they are buying, players will gets always on arena fateuhc/fatemeetup, according on which mode (uhc/meetup), players bought this permament item.
Permaments item players can buy by moneys/coins, coins players can get after killing player/win the match, and they can lost it when example they die. Please add permission, to vip ranks, and they will get 2x money or 1.5x, add option how much in config, please.
I suggest to add command to turn on/turn off ''2x money event''. i think i not have to explain how this event works.
Shops u can add in gui, in command and add any ''item'' in uhcgames. at the first gui, you can choose uhc or meetup category, if u click at uhc, you are redirected to new gui wherein you can choose and buy permament item to uhc.
The same is with meetup.
all can be saved in mongodb database, and all plugins (fateuhc fatemeetup uhcgames) should be connect to the same database.
if something is not sure, please ask me.