My idea is twofold:
1) Give us the ability to add a label to multiple Targets (By letting us select multiple items in the list, and then add a label to each of them.
2) Add the ability to filter by label in the Android app. We can do that on the website, but when I'm out and about, I'd like to be able to see just the Daily Targets tagged with "Errands" or "At the studio" or "Phone Call" etc. (This is similar to the "contexts" idea in the GTD system. Which I know is a different approach than Simpleology, but that particular aspect makes organizing the Daily Targets much easier - when I'm in a particular "mode" I'd like to see only the relevant To Do items.