1. it's bigger
2.it uses text input
It's pretty much an expansion on the stuff in the Tester's Tool kit. How the event is triggered (switch, touch etc) is up to you.
This is obviously shorter than it's likely to be. You can just use some Call common event stuff so that you don't have a list box as long as your arm. It'll effectively call up, through a series of choice boxes, everything you could possibly need to change anything about your party. I'm pretty sure I got everything. You can get the gist of how it works pretty easily, so it's easy to see where there might be a problem.
And no, I can't make it shorter. It covers everything I could think of that you might want to chage.