Should I upgrade my Pro?

I have a surface pro right now. Is it worth it to upgrade to 2? I figure I can probably get 750 for my pro 128gb if I sell, a new purchase is that's about a 400$ difference. The minor performance boost/screen doesn't really matter to me (worth..$20 to me). 3hrs additional battery is a big deal (worth $200). new kick-stand is sick ($50). free skydrive and Skype is a nice bonus ($30). Maybe I can get the battery cover and hold out for a lighter model down the line? Obviously by then my pro 1 will be worth...500 if im lucky.