Two things that’d be great additions to the Router Utility on iOS (and presumably Android):
add the ability to switch SIMs for a radio. I’ve used the app a MAX BR1, later a BR1 MK2, and now a Transit Duo. We run with 3 different carriers in the Duo, two live, and one just in case. Would be nice to be able to swap in with the app, vs. the WebUI.
add the ability to toggle a SpeedFusion tunnel on/off. We most of the time prefer to have it on, but in fringe areas, it can be better to run direct as signals are bouncing, as the tunnel setup time slows getting back online.