The one most glaring omission that I find about their website is not posting tabular or any historical data for backyard stations.
I have Cumulus sending my station data to them every 15 minutes, but there is no record other than the current conditions.
Their desktop application might support this but I never installed it, and don't plan to.
Good feedback. Our CTO informed me of some changes that does seem we're going to try to do more with historical data and not just current obs. I'll give your feedback though to him and let him know you want to see more historical data.
WeatherBug on the desktop wouldn't help you much there. The Plus version includes historical data for our Professional stations, but neither versions include historical data for Backyard Stations. Good feedback to consider for future versions though.