Here are two critical details to consider regarding export/printing...
Printing under Windows is huge can of worms - just ask anyone who's done it before. To make things more interesting, I can guarantee you that the moment we support printing, numerous voices will start screaming for the ability to print the data in exactly the representation THEY want for their personal preferences. For evidence of this, look at all the different character sheet formats that are created to suit the preferences of different gamers every year. It's an issue that has garnered huge volumes of complaints for our Hero Lab product, even though we made it possible for users to create their own custom output. Doing that isn't easy, and everyone wants it done their way with a few mouse clicks. Heck, there are entire divisions of large corporations dedicated to tasks such as printing and reporting. So printing is like opening Pandora's box for a tiny development team like us.
On the flipside, simply exporting data is relatively straightforward. But there's a big, nasty complexity with export that I'm certain none of you have considered. The moment that we allow export, how do we secure content when publishers start selling that content for digital delivery through Realm Works? You obviously want to get YOUR content out, but publishers aren't going to want you to freely export their content to XML or some other format, since someone out there lacking scruples will share that content freely with others. So now we have to solve securing that content in ways that can't be easily hacked, which is lots of work.
But things get even more interesting. What if you import published content into your personally created realm and integrate it - or even customize it? Now you have a mixture of content that is part yours and part published. Obviously, YOU want to get it all out, but the publishers won't necessarily see it the same way - those unscrupulous folks are still out there and happy to pirate and redistribute content. How do we reconcile this? How do we have export be truly useful for everyone while still safeguarding against pirating the content for other uses? This is something we have to at least solve on paper before we can implement anything, since anything we implement prior to the Content Market will need to be modifiable to accommodate whatever security we ultimately put into place.
As @Parody said above, if it was a piece of cake you'd have it already. Hopefully, the above explanation gives you some insight into the complexities involved that we need to solve...