When switching surfaces, like switching to the blueprind sandbox surface, the HUD disapperas. It unchecs the boxes and i have to check them again.
It's just a minor inconvenience but i just thought i let you know.

A(lso scrolling up and down instead of left and right wehn there are more signals than availlable space seems more intuitive to me.)

Whoops, yeah that's not supposed to happen.

I have been thinking about though if you only want to see the current surface's Visual Signals or if you want to see all of them - what do you think?

And yeah I've been meaning to do a bit of an overhaul when it comes to the GUI :)

I prefer a checkbox. Some combinators/cables you want to see regardless of the current surface and others are just clutter.
Also clicking on an Item should pan the camera. I've managed to forget where i placed them more than once. ^^