I would like a feature that allows the fan to run with no auger or igniter. This would allow us to use our cabinets as cold smokers only, with an additional smoke tube. Grill style models might be ok depending on how tight the lids are... Currently I need to crack my cabinet door to allow the smoke tube to stay lit, otherwise it extinguishes without O2. The fan alone could solve that.
As others have mentioned, the graph feature is not only fun and cool to look at, but It helps in estimating how much time might be remaining. If the app could keep a history of cooks by date, so we can see basic info that'd be helpful to repeat recipes or methods. Like a built in grill journal that captures actual data and allows you to name and notate.