What information do you wish you had for your apps?

Hi guys,

We're working on a new 'SEO for apps' startup (now being billed as ‘AppStore Optimization’ or ‘ASO’).

I'm curious, what information would you love to see about your apps? For example:

-Seeing where your app ranks for a particular search phrase (daily or weekly)?
-How much competition there is for a particular search phrase?
-Missed opportunities on search phrases that you could be ranking on?
-Who your competitors are and what search phrases they are ranking on?

Are there other things you think would be valuable?

Thanks,
Adam