None of them were that important, really. They were more customisations to how I wanted the device to work. "Make sure GPS is turned on when Maps is turned on" sort of thing (which you now can't do without rooting the device and jumping through a few hoops, so I just turn it on manually these days).

I had some stuff to conserve and report on battery consumption, which now has a zillion different apps. I also had some location-based contexts and automatic email actions which are now handled by IFTTT. It's easy to forget how rudimentary smartphone apps and services were, even just a few years ago.