Most tree farm designs involve pushing a tree with pistons after it grows. It would be awesome if TreeAssist had an option to listen to piston events and replant a sapling if the bottom log is pushed by a piston. This would allow fully automatic tree farms. It would probably be best if enabled by an option, since some server admins might not want that.

"How hard can it be!"
I'll try this, been messing around with pistons for another plugin already. This also reminds me I need to start pushing to github again.