It would be nice if servers could be tuned to prioritize locally hosted communities over remote ones. There's a real opportunity for each community on the same topic to have distinct flavours and cultures, but so long as they all appear to be the same damn thing and appear with the same frequency in the content stream, it's never going to happen. It's not like people really look at the remote server domain.
It's really nice that the Local feed exists, but when people just bulk subscribe to 8 different communities with the same name, stick to their subscription list, and then treat them all as the same place, that just kills a lot of potential for heterogeneity.