A setup area would be really cool! Maybe a complete setup with a "frame only" stand that shows all the plumbing and sump configurations and such.
A store near me does that on everything with the exception of their big display tank, which is great for educational purposes. I see them talking to new hobbyists using that all the time. Once you get past the big display tank to all the other tanks, it just looks sloppy. Between the equipment in the sumps and the equipment just laying around the place looks like a disaster. Which is a shame, they have these 2 huge raceways (10X3X1.5 ish) where they will put larger colonies. People aren't enticed to stay there and fall in love with something and put down that $300 they weren't really planning on spending. To make that work I think you need to be OCD to the max so it looks super clean.
As far as what I would do, for me it mostly revoles around this formular the longer they stay = the more they spend:
- Lounge area, already been brought up
- Lots and lots of frags, make people stand at the tank for a long time looking
- Hire a marketing / retail specialist to help lay out the store. There's a whole science on how to display products that entice people to buy.
- The computer nerd in me would collect all kinds of data on each sale (what display it came out of, how long it's been there, how much profit in that particular item, etc) More data = more educated decisions for the owner.
- I would put all the floor staff on a hybrid hourly / sales commission pay scale. The goal would be to keep your employees eager to help customers, but not overly pushy sales people.
- Let some staff members build and maintain their own display. Something they can take pride in and talk to customers about. and it should keep every tank from looking the same.
- Online sales, I think this is a must anymore, unless you have a line of people out the door everyday.