Bukkit

What is the enhancement in mind? How should it look and feel?

Consider a hypothetical situation where permissions nodes need to changed en-masse.
It would be possible to type a whole bunch of commands in a file, then import them using '/perm import'
For example, I can use this 'dump' file to add a Mod+ rank, and change Mod, Admin and Lead-Admin simultaneously!
http://pastebin.com/aHwH1hD8

/perm import is just a convenient way of copying & pasting to the console.

I'd rather /perm import always start from a known state - that is, an empty database.

For incremental imports, such as what you're doing, I think it's probably better to just copy & paste. The only major difference between copy & paste and /perm import is that /perm import will halt on any errors. That means you have to get your database back to a known state before re-importing. With /perm import, that's easy - you /perm purge. If you're doing an incremental import, it's not so trivial.

(Whereas if you're copying & pasting, you simply just fix the error and paste again. zPerm commands are generally idempotent and do no real harm when run twice.)

I wish /perm import would actually execute all the commands in a single database transaction, but that has many technical hurdles. If it actually did that, then I think I could justify adding an incremental import feature.

I understand, it can be a bit complicated to create something that executes permission commands in a sequence, a shell script capable of doing that would be much better ofcourse.