Hello Tom,
I just had an idea (and suggestion for you):
If you are going to continue to make improvements on the FREE PayPal Me Plugin, how about keeping the current upgraded Version of PayPal Me as a Free Plugin - however with no additional upgrades, e.g., changing the phrase FROM "Coffee Amount to be spent" TO "Amount to be spent?".
Then make the upgrade (as noted in the above paragraph) but with that next upgraded Version, charge for the newest Version of PayPal Me.
And here is another idea for you to think about for making another upgrade:
Provide for alternating Icons, e.g., Coffee, Beer, etc., etc.
Of course, you would have to include an option so forum Admins could either set it as automatic changing, OR, NO changing.
By the time you make those upgrades (plus others you or someone else may come up with) it will make paying for the Plugin not only logical, but I suspect most individuals
would be quite willing to pay for the UPGRADED PayPal Me Plugin!
Dave