I'm new to GS so these are just some first impressions, things I've seen in other programs and miss. Sorry if it's been suggested before, I just did a quick search but didn't find any.

* I'd like to have rotate snap in the tool bar.

* I'd like to be able to lock objects so I don't move them by mistake.

* I miss a tape measurer tool. Just two positions that show distance and angle.

* It'd be nice to be able to hide objects, besides decreasing view depth and scope down.

* It would help to be able to set grid and snap freely, at least in my current project as 1mm on the blueprint equals 5 units to get the proper scale.