My issue with LFS's are that they cater to one group or the other. Not all.
You got stores that sells no frags, only colonies, you got stores who only sell cheap stuff and common stuff, you got stores that sell mostly fish very little corals, and no store has a good selection of high end foods and other stuff. I'm not referring to Ecotech, AI, Apex, and dry goods like that. I'm referring to stores that have several brands of salt, tons of food options, both dry and frozen, tons of other cool accessories.
I'm in the city, and I have no store to go to. I'd like something a bit closer instead of an hour drive to AP.
But to answer your question, diversity. We need more of it.