i want- no, MUST do the same thing. i am new to this but familiar with php/mysql. it looks difficult because cats are databased and pages are probably files. that would be a major rewrite and updating would be really impossible UNLESS these changes are within the guidelines of plugins! (crossing my fingers) I also want to confine designated users to any single page. ie each 'group of users' (pagenamegroup) would have their own page and role-ality!
and as you dont really want to create system users, you want to simply create a file for that page one time which is relatively easy to do. i wont attempt this myself until a board pro can comment on the likelyhood of success for a plugin.