will it be possible to make the sectors large enough so you could explore in the zoomed out mode?
Are you suggesting the sectors be even bigger so you can't see it all while playing zoomed out?
i think that maybe limit the buildings by forcing the resource buildings to be built only on specific zones.
What do you mean by zones? Zones in the gravity well or zones out in space?
have you considered the automated trade ships i suggested? this could allow for restrictions in that they only deliver to colonies, so just buildings mines in distsant sectors without colonies can be dangerous.
Well, I like the idea of trade ships. Its just not at the top of the list at the moment. I still have to finish the F.E., the EMP weapon for Dreadnaut, and neutral encounter. I would like to integrate the idea of trade ships to give the player something to do in the early game instead of waiting for resources to tick up.
after playing again, i think the interface isnt done yet. the sides interface text is written in bad font for the situation, i will replace it with a thiner one and make it stand out more. also, i think that enlarging the middle circle could be a good thing.
As for the font, go ahead rework that part of it. You don't need to send the whole graphic. I'm currently using a separate sprite anyway to try and make it more readable.
As for the center, you probably don't realize how much work it is to change the size or shape of these HUD elements. Everything has to line up perfectly so that you can't see the intersections (very time consuming process). Here's what the center part looks like by itself:

The other pieces (open and closed) have to be lined up using the level editor and because they are different scenewindows, I have to run the game after every slight change to see how they line up. Gasp, please lets close the door on the center part.
p.s. build bar, research bar, center = 5 separate HUD elements (i.e. scenewindows). If they overlap, the mouse events are cut off for the one below it.