When I first started many of my early jobs, there was a trial period with some percentage withheld. It is common isn't it? Perhaps it would actually incentivize som, maybe 50 percent withheld and if they don't pass 3 months adequately, the other 50 gets burned. I would have to think more on it but without a cost to spam, plagiarise and act like an ass *until caught,* it is going to be the wild west. The problem is that action is always corrective rather than preventative and it requires the community to catch and act, something the community doesn't do very well at the moment.