Allow services weather that could be anything do with paying someone to get you 99 agility.
Anything to do with a paid services that's doesn't effect rules of the server.
The reason you should do this, is because this idea will create a community. People would enjoy earning money by doing stuff others don't want to do but have the GP to spend. Now players if your worried about the eco due to this idea the eco will not be effected. 9x/10 the people doing this service's will have alot of gp anyway and most of em do stake/give away items. And also for the people who can't make alot of money due to rng or w.e if they wanted to say make 100mBS for doing a 99 service w.e he will also be happy.
If this is implemented have a forums section dedicated to this and we can set a ranking system. Say if the user has done 10 services n provided proof of them they can began to get a trusted rank.