I still don't think they ever should have been put on the circuit, especially after Heretic came out. They were far too simplistic and poorly designed (Lockdown less so) to be competitive; Granted you were forced to build simplistic forge maps for them to run properly. H3 had a decent amount of maps for MLG so it's not like they had to implement forge maps for variety; a current problem in H2A. I'm glad they were looking to add community made maps but they really dropped the ball on choosing them and now it seems leagues still refuse to look elsewhere and see the many other maps that are far better designed.
Pretty much this. But, given that 343i dictates the settings for the most part, there's a good chance that solid maps from people other than Salot could make it. It's just gonna be an uphill battle of building a support base for maps.