Hi!
I believe it would be a great ability to have the sort the observations of different satellites (and also for ground stations) by the columns. Also, to upgrade the search function to include not only the 8 filters that are currently there but all the columns for satellites or ground stations (frequency, mode, etc). Furthermore, I think for the frequencies it would be useful to include a slider and/or bottom and top limits.
As an example, it would be quite tedious to find a successful observation of a particular mode of ISS : https://network.satnogs.org/observations/?future=0&bad=0&unknown=0&failed=0&norad=25544&observer=&station=&start=&end=
Cheers!
Vedurk