I’d second that feature request.
What surprised me was quite how much traffic (certainly at my location, 361 ft asl) was at under 1° elevation.
It’s fascinating to watch the elevation angles dynamically updating from SkyAware and traffic above 25° elevation is, contrary to my expectations, quite a minority of the flights seen.
Occasionally the data can seem scewed by the odd helicopter that lands very close by, resulting in a very low elevation angle: but that is because I am using my site’s elevation as part of the calculation.
Normally outliers in the data are a good indication of troposheric enhancements, for both further maximum distance observations and for ground transmissions well beyond the regularly observed ground range.
See also https://discussions.flightaware.com/t/how-about-a-selectable-elevation-angle-column-in-skyaware