Repeat grid properties in the property inspector (spacing, number of rows/columns)
Currently, there's no simple way to look up or adjust the spacing of an existing repeat grid element (other than grabbing and dragging the spacing area).
This is sometimes bothersome because, 1) when just trying to look it up, you don't always want to change the spacing, and 2) finding the spacing adjustment area can be a bit fiddly.
Also, when you DO want to adjust the spacing, it can be a bit tricky to get it on the exact pixel.
Therefore, it'd be nice if the spacing property would show up as an input field in the right (properties) panel. So you can easily look it up, and adjust it more exact by changing the field's value.