Looks like I'm in the minority, but I think this is a good move temporarily.
The quality of the league is decreasing. We struggle to field a league with 10 competitive teams, let alone 12. With NRL increasing, they are going to hoover up even more of our top English players, thus reducing the quality further with not as many quality English players coming through to replace them.
There seems to be this myth that having our youngsters play more games is all we need to do to improve them. There is so much more to it than that. The quality of the environment they're playing in is massively important. They will not improve much if they're playing in a substandard competition alongside other low-level players. They need to be in higher quality environments with bigger competition for places.
People are arguing on one hand that we'll only get low quality players coming over, and on the other hand saying they'll take the places of our talent. Well if our talent can't displace low quality imports, that says a lot about the quality of our pathways. If we have talent, they'll push out untalented players.
This is without even considering the fact that we may be expanding to 14 teams soon and need even more players.