Could you consider upgrading the guild money cap ?
Right now, the cap is at 100 plats (actualy 99,999) and for big guilds that pool resources for their members, that's rather low.
We are forced to store money on players's accounts, and for various reasons, that's not practical (people stop playing, have accidents, get ill, ...)
An alternative would be to re-enable those coins you had that were sold for their buy value, we could then store money in the guild vaults.
Thanks for your attention, stay safe.