There is an exploit found with the Drug Labs actually. The drugs that the drug labs give players super speed and like 300% hp. This can easily be abused which is why we haven't given anyone the drug lab.
As for the F4 menu, I'll re-arrange the jobs to be more organized sometime soon. But how I organized it now is by rank, regular jobs, VIP jobs, Founder jobs. I personally like the organization by rank, but I can change it if people want. I don't think we can have the categories over the jobs, but I can group the jobs together.
On that note, I also color coded all the jobs that are similar to one color. For example, all Government jobs except the Mayor is Dark Blue, each gang has it's own color, custom jobs are pink, hitmen are light green, etc. I will be editing a topic to include this, most likely the rules topic towards the end.