How about if I wanted an onscreen hud, include my "moderation" system which uses 4 buttons per user, also having the "officer" system enabled which takes 2 buttons per user.
Then I also want to run the LFS Mail system
oh and a subsection system that I've written for PB's or something.
Im pretty sure that would clash.
At the end of the day, adding this very small feature, would just make it a hell of a lot easier for the developers that create the insim applications, and would also make it a hell of a lot easier for the server administrators, or the people that run them locally on the client side of LFS.
It would be a very simple addition to the protocol, and yet would improve it 10 fold.