I have been using Skritter on my Surface Pro (the pen works great.) I have one small feature request that would only take a moment to implement - it would be cool if a custom start screen image could be added. Right now Skritter on the start screen looks like this:
Customizing it requires 2 lines of HTML in the head tag:
meta name="msapplication-TileColor" content="#(background color)" /
meta name="msapplication-TileImage" content="(path to skritter logo)"/
More info at http://www.buildmypinnedsite.com/
Thanks for considering it!