I've been having the same above 2 issues. I will be estatic when they are fixed.
Equation Work Around
The equations are a little buggy. What works for me is an initial sketch, the equations work just fine. Once the feature is made and I go back to edit it, the equation doesn't work by adding the second half of the equation (+ X.XX) to the end. If you retype the whole equation (X + X.XX) it does work. This works with both the feature and the sketch.
Mate distances I can't get an equation to work either. The only other option is either write your equations out on the old pencil and paper (along with using your brain) or the high-tech calculator.
The Macro thing I haven't figured out yet. I guess I'll have to wait a couple of months and update and see if it works.
I'm kind of glad to know it's not just me having these issues.
This only happens if Office 2013 is installed after SW2013.
Uninstalling and reinstalling SW fixes this issue.