I think I know how to allow admins to handle multiple commands at the same time making their job a little easier. Suppose an admin has to enter a bunch of commands to initialize the game play. To do so he would need to lower the protection so that players can roast each other, set the time limit, set the max score limit and make an announcement that a mach has begun. He'd have to issue the following commands over jj2 chat:

!admin set healthcontrol 3
!admin set timelimit 20
!admin set maxscore 10
!admin announce ||Match has begun! Fight now!

Now suppose these lines were located in a txt file named startmatch.txt on the server and all the admin has to do now is type in:

!admin exec startmatch.txt

Pertty useful, huh?

EDIT (to Cooba's post below):
Mostly everything that PC4 can do plus more. I still do not have a full feature list.