Before we go giving people GBL access we should wait for countermeasures to improve.
Aimbotters don't seem to be too much of a problem when I play. It doesn't seem to sway the game THAT much, and, well....maybe I'm not as "passionate" as most of you. This isn't necessarily EVE online, and the picturesque game you desire doesn't seem to be worth such extreme measures.
Correct me if I'm wrong, but I believe the GBL is generally used for ban evading aimbotters/griefers/extremes(misc.).
When it comes down to aimbotters, you either hide and a T1/2/3 script catches them, or tell an admin on the IRC. (I think this is where that "server mafia" ideology comes in. Pro's and Con's I'm too lazy to list at 1 in the morning.)
I've never been hit with any of these scripts either, but I've seen mikuli get a couple of false positives. Then again, we're not all mikulis, and the T3 script seems to be the most reliable when I am playing.
Either way, GBL accessibility seems like the precursor of an AVO/MCBans ordeal......