First of all, you can make all the regulations you want, but in the end you can't regulate what does, or does not, go on BCD.
In Costa Rica it's legal, all the girls are registered and many hotels require them to leave their ID card at the desk before going up to a room.  That aside, it's all a matter of negotiation between you and your Tica.  It all seems to work nicely.  No reason why we can't do that here.
Now that weed is mostly legal, perhaps hooking will be next.  But given the puritanical nature of this country I'm not going to be holding my breath.

sneaking through hotel lobbies, the gentle knock on the door and slinking into the room, etc.
I doubt if ladies feel the same way about this though.
But honestly, this hobby is already a "guaranteed" thing - look at a picture of a beautiful women and say to yourself, "I want her" and after ironing-out a few details, it WILL happen.  The illegaility is a big part of the adrenaline rush for me.
Take that away and this just becomes too easy and predictable.  In civvie sex, you have the challenge and excitement of the pursuit, and that is already missing from this hobby.

It seemed to me that Canada had it right.  They didn't exactly make it legal or illegal.  They don't have brothels on ever corner but they haven't shoved the industry so far under the radar that it's easier for the bad elements to prosper.  Unfortunately, they are heading towards making prostitution illegal driven by the same kind of holy rollers we have here in the states.  Why can't people just live and let live.  Don't want to partake of an SP, then don't.  Just let the rest of us make that choice for ourselves.