I actually implemented the first one of your requests in a recent change, but its not uploaded as a new version yet. You can see the changes to the config here: https://github.com/L-E-iT/Referrals/blob/Data-Rework/src/main/resources/assets/referrals/default_config.conf
You can also build from source using the Data-Rework branch, just make sure to back up your config and make the appropriate changes to the new one when you update.
I plan to get this uploaded once I have more time to make sure its working 100% as I want it to, although I don’t think there are any issues with the current build, and its likely ready to be uploaded.
Thanks for the kind words I will definitely look to add other requirements for referrals in the future.