With reference to this thread on the AppHub forums I think the goals depicted there are reasonable goals for a starter kit of sorts, and should hopefully make some nice additions to RapidXNA
So, when I eventually get around to doing more dev on RapidXNA I will be aiming to do the following:
Not particularly unrealistic goals, and for the most part I reckon it will be a step in the right direction.
That should hopefully give me a decent list of things to build into RapidXNA.