1: make the clickable area of the sketch palette (and other menus) larger, the text can also be a button. Having to click so accurately wastes a lot of time.
2: connected to the above: retain selections when the entities are first selected. So often I need multiple constraints on a group of lines (eg: equal+ parallel) and having to reselect each time is also a time sap
I searched a little but didn't find these points amongst the 1000s of ideas, if they're already posted please let me know and i'll vote there.
Hopefully that shouldn't distract from the much more important points of configurations and sheetmetal extrude-to-object functions.