Nice thing is there's basically a template out there for MiLb stadiums in the 5k-7k range and it's tough to screw them up from a design standpoint (Although the Goats did manage to forget about right field).
The biggest thing setting stadiums apart is location within the region in terms of accessibility and view, concession speed, price and quality.
The Blue Wahoos in my area have gotten plenty of awards and they do it right. Saturday night games are a combination of family event and happy hour. Fireworks over the bay after every Saturday home game. And the eye candy is phenomenal.
My favorite part is kids can come and go from the outfield gate and play on the grassy hill behind the stadium. They get marked on the hand and can come and go as they please.