I dont know, in my opinion, FX is very transparent. I have dozens of different price-feeds on esignal, additionaly, there are many free broker-feeds. If a dealer constantly fills me off-market, ill just take my business elsewhere. I think its pretty self-regulating. I also dont think brokers, who are in for the long haul, practice stop-hunting. The reputational risk would be much too high, and the retail-brokers are reeking it in big time as it is anyways, even without such practices.
Besides, i dont think FX will move towards a more regulated, exchange-traded direction any time soon. The players who have a say in this, the bigger sell and buy-side institutions, just dont have any interest in this. For them, its ideal as it is. No regulatory overhead means cheap transactions and flexibility, to conduct business in exactly the way it suits them. They trust each other, and the market is transparent.
Besides, i dont think FX will move towards a more regulated, exchange-traded direction any time soon. The players who have a say in this, the bigger sell and buy-side institutions, just dont have any interest in this. For them, its ideal as it is. No regulatory overhead means cheap transactions and flexibility, to conduct business in exactly the way it suits them. They trust each other, and the market is transparent.