There's a LFS in Calimesa (So. CA) where the owner had the idea of selling small 5-10 gal. tanks fully set up with Killies of varying kinds. This would include a bubble filter, light, substrate, piece of driftwood, Java moss, maybe a crypt or two--simple stuff. This setup would also come with detailed instructions on caring for the fish as well as breeding them. I never saw him do this concept, but it sounded like a good idea to me. Some killies are really beautiful, and placed near the cash register, and priced around $50-70, I may spring for something like this. Of course I'm not your average LFS customer, but then again...
My LFS has nice people, but mediocre fish selection at best. Their plant selection is even worse. I just set up a 75gal, and had to go to PetSmart for the plants

The LFS has one tank with some Amazon swords, another with a few algae-laden bunch plants, and another with potted plants almost completely covered in algae. No display tanks for FW. Now their SW side is almost like a different store: Clean tanks, bright fish, a few well-kept display tanks. I guess there just isn't a market for FW planted tanks. Maybe sometime when I'm on vacation I'll offer to set one up for them with trimmings from my tank. I wonder if they would go for that?
I'm also into Rainbowfish. This store had one rainbowfish labled as "austrailian rainbow" which I doubt is correct, 2 M. praecox and 2 G. incicus. They are willing to, but their supplier doesn't carry much of a selection and couldn't get me the fish I wanted. I'm quite frustrated about the current situation, but I'll just have to be patient. I realize they are a specialty fish, so don't hold it too much against them. However, they didn't have any Otos, SAE's or Amano shrimp, but I was surprised to see some "algae eating shrimp" aka bumble bee shrimp. Meanwhile my algae grows. I'll probably have to order online to get what I want. But I wish I could give them my business.
OK, done with my rant for now
What I would like to see in a LFS:
-good selection of plants
-multiple well-kept planted show tanks
-healthy standard fish selection, with the ability to special order rarer species
-a few rare species of fish
-good FW shrimp selection
-equipment for planted tanks (lighting, CO2 systems, fertilizer, etc)
-knowledgeable, friendly staff
I think if my LFS actually went into FW planted tanks like they did SW, it would create a new customer base and increase their business.