A Few Suggestions
Now that you've been through the ringer with Fireball Mail, here's a few things you may want to check out next.
It's always great to learn an UP THE NECK break that can compliment a standard break. It gives you a totally different sound when playing multiple breaks on the same song. Up the neck playing is an integral part of the Scruggs sound. For something different, check out the MELODIC arrangement. That's another way to get an interesting sound. Melodic banjo usually has a very pretty sound. Cascading notes flow, one to the other, like a waterfall. Last, but definitely not least, check out the BACKUP arrangement. Playing lead is fun. We need to know how to do it. However, when playing in a jam, 90 % of your playing will be backup. We need to be very comfortable playing backup.
Hopefully, that will give you plenty material to work on until you find another tune that interests you. Have fun, and keep picking :)