I have just started programming for N900 by learning some Qt and C++. I have written one command line program that interfaces with the calendar and now I'm going to work a GUI app. I plan on building an extended version of the tasks capability.

Basically, I plan on creating my own sqlite db to store additional information about tasks and wrap the basic, built-in functionality with my own.

I think building a repeatable task managed in my wrapper application may work and I'll consider it as a feature.