Problem is a lot of groups and other NGOs say they're cool with limitations but in practice they push hard for removing limits and complain bitterly about it to the point of breaking the law. They want to neuter the "careful, structured" part of the law and make it so it doesn't really work anymore, which ends up building up even more pressure to have someone be the asshole and deal with it (see, Trump's disastrous ICE stuff). 

Like, Labour has their one-in-one-out system going on right now where they send back to France migrants who came in on small boats to accept people who actually applied for and got refugee status. But NGOs and other advocacy groups call France dangerous for these illegal immigrants, say that sending them back is abusing their human rights and that they basically need to shut this down to take everyone in "until they can figure it out" meanwhile appealing to airplane companies and other places to not help do deportations. They don't even care about crimes that get committed, several times now politicians and activists have covered up crimes to make it easier for the criminal to stay. 

All I'm saying is, don't expect a "reasonable" immigration system with limits, even ones as humane as you can make them, to be just accepted. They'd still call you a fascist for it.