I agree that changing XaraX to a plugin architecture would be a very good idea.
It would allow customizing XX to all kinds of different special needs, like flowcharting etc, without bloating the main program.
In addition to that plugin/DLL feature it would be nice to also have a scripting engine, or something similar to Actions in Photoshop.

But what I want most of all ASAP is the ability to export only selected object(s). I cannot see why they haven't implemented that yet, as IMO it's such a very basic feature which most users would need.

Another small wish is to get all shortcuts visible in the tooltips. I never remember the gallery shortcuts...