One thing I find myself wishing for when optimizing a connection is more information about the cellular channels.
For example - consider this view:
It would be great if you could also display the current channel bandwidth too - 5MHz, 10MHz, 20MHz, etc.
An even more powerful tool would be the ability to attempt to connect to each available cellular band (one at a time) - reporting back on which bands are available, and the bandwidth and signal characteristics of each. Running an automatic speed test on each would be even more ideal.
Doing this manually is a time-consuming slog, but in some areas where you are trying to isolate and eliminate badly performing bands it is absolutely essential. If there was a way to automate this, advanced users would do a happy dance.