Hi,
I wish the sketch dimensions could accept zero as a value. Currently it's not possible to hit enter after having typed in just zero.
The reason behind this idea, is that there are many times I would want to input zero where I think that I might need to adjust later. So instead of having to draw new geometry, and/or delete and reapply sketch constraints, it's easy to just input a value in the dimension that's already there. This is currently possible in Inventor.