This is a fairly simple suggestion that would greatly improve the user-friendliness of Sketchup.
My suggestion is to increase the number of Nodes that appear when hovering over the blue outline of a selected group or component when using the Move tool. Adding a Midpoint and Centerpoint Node would allow you to snap to the midpoint of the object without needing to first draw additional guidelines.
The modeling I do is mostly of Interior spaces that rely heavily on the symmetry of furniture so this would be an invaluable update!
Thank you.
Would be great to have a Node here: