Ok, so there are 3 big problems here:
#1: This is a officially a Helper job. Since
@FalseHonesty already explained this one, I'm going to let it be.
#2: This would be incredibly competitive. Just imagine the Helper rank, just its within reach! YOU can get it! Imagine how many spammed applications the staff would be getting
#3: Giving players perms on the forums is a bad idea. Simply put, these people are not members who have been evaluated for maturity and such, (with something like an application). They're just active forums members. This could be abused incredibly.
And last but not least: WHO CARES?
I mean, these people posted the wrong evidence or something, so they're not going to get the reported player punished. Who cares if the application gets officially denied or not? Of course, its a nice, polite thing to have, so the Helpers do it. But to give this to regular members? No. The risks far outweigh the rewards. -1