From my quick run with the app, what I find lacking isn't in the events, but in actions: currently, it mostly notifies you (or others) about events.

It'd be more useful if it could also interact with the phone settings (for example, silence the phone at certain locations, &c).

Currently, this could be worked around by having an event launch SL4A that would run another script doing it; but this forces you to maintain a separate script for the desired action, instead of doing it at the same place.