Having now a lot of different themes, it would be useful to use a common default app list for all of them.
I mean, once you define you default phone app, messaging app, calendar app etc etc, you could refer to this value when assigning an app to some action.
In this way if I discover a better phone/messaging/calendar/etc app, I'll change only in a place and it will be ok for all the themes.
If I download a theme already using this default list, I'll have the right apps without going to set again all of them for the new theme.
Themer had a similar feature...