It would really be a big plus and very convenient. To be clear, I would like the same genre sort options available at the top of the "On Now" section added to the full "Guide" section. That way, I could see all the movies for instance, that are showing for the next 2 weeks, rather than just one day. This would make finding what you want to schedule for recording much more efficient. Scrolling the guide is too tedious for someone with my attention span. I know I can go to web app and look in a similar way, but I think it would be a great feature for the TV app and "appears" to me to be almost there anyway, due to it being in the "On Now" section already and also in the web app.
I don't want to have to get up and log in to my computer just to search genres. Especially when the info is already in the app. Did I mention I'm lazy?
I am using the Fire TV app, so maybe the feature is available on other platforms, I don't know.