Yeah, I think logistically it would fail in an area the size of LA. There are some interesting concepts that off the top of my head would be interesting to try however. Personally I would like to see a larger effort toward foot patrol in some areas, with maybe special community engagement officers out speaking with groups in their neighborhoods, soliciting feedback about problem areas, and just brainstorming with the public about how to better police their communities.
Maybe a couple pilot programs to gather evidence? I'd love some feedback from police officers whether they think community-oriented policing concepts would be viable in their jurisdiction and why/why not.
I think it would be an interesting discussion as well as an opportunity to learn.