You can do the 'admin editing' in phpMyAdmin maybe, so it's not too much of a priority I'd say. Not sure about this, though.
Making prefixes searchable would require them to have their own column inside a table, and as of right now I don't remember if this hack makes a column already, or that it's only a virtual addition to a thread upon creation.
I'll look at that once I install this on my testboard..