Ok i came up with another suggestion:
Concerning the 300$ Donation custom rank.
I would like to suggest that the 3 last used Custom ranks(previously approved by Matthew) you had are saved in your Perk Manager. This makes it easier to switch back to an old custom rank if you don't like your current one or if you just want to change it every now and then without having to wait for Matthew to approve it
again. This will both save Matthew's time and make it more fun for the donor to have his wanted rank changed immediately.
Optional: if it's necessary(for whichever reason), you could put a 1-change-per-week limit on switching between your 3 saved custom ranks.
Example; just took the cape & mew ranks as an example, these would represent my previous personal ranks