Foster a club atmosphere is my best advice. The best club I ever flew at was a group on it's own airfield where the club activities were almost as important as the flying.
Also, when I got involved with running the place, I scrapped landing fees and reduced the fuel price. The result was an increase in income as other pilots made it their destination of choice. You will be amazed to find how far they will fly to fill up at 5p a liter less! Also, we got a good coffee machine, great muffins and a nice place to sit and consume them. The cafe made a fortune.
Something to consider if you have control over such things.
Also having something different to fly will set you apart as well. The club I fly at on my infrequent visits to the UK has a Decathalon which is why I fly there. Offer AOPA aerobatic courses and you will enhance the club massively.