As a boater in the Gulf I understand the people looking for wind data on local lakes.
Sounds like you're trying to appeal to everyone in the community and the pilots. Can't go wrong there.
Maybe add a radar image for the surrounding area. With software like GR3 you can customize the image to include that lake you spoke of to keep the boaters aware of inclement weather. Some live wind data with sensors located near the runways to give pilots a better idea what they are in for. Some general aviation weather reports for the specific area. Also maybe a live streaming webcam image instead of static.
I understand you have a budget so some of these idea's may not be practical but as you said it's an on going project. Looks good so far.