[Casio]

This looks like a very good plugin and it looks like you have put a lot of effort into it but it seems to me that if an Admin does not have (for example) the ban command, then there is no need to allow him to ban at all.
If the top Admin gave ban to that Admin then the ban usage could be monitored in the amxx logs.
Also I can see the top Admin getting sick of recieving requests of an Admin trying to use commands they have not been given in the first place.
That is just my opinion.