Ray, if you haven't given SotS a glance, you might want to consider looking at it for good ideas. It's a lot closer to a spiritual successor to MOO1 than GalCiv is. SotS maintains the philosophy that micromanagement is bad for the most part, and aims for relatively deep gameplay while still keeping streamlined interfaces, and for the most part succeeds. Pretty much everything on your list is there. The main exception is that they did go for 3D tactical combat, ala Total War series, but it's done well and adds a lot to the game IMHO.
It's true that on its initial release it was over-simplified, but it's had 2 expansions since then, and those expansions haven't just added new content, they've added new sophistication and depth to the original content, for the most part without adding too much micromanagement (and most of the things that add significant micro are optional.) The AI is pretty solid these days too, as AIs go. The developers have been very diligent about improving gameplay.
It's true that on its initial release it was over-simplified, but it's had 2 expansions since then, and those expansions haven't just added new content, they've added new sophistication and depth to the original content, for the most part without adding too much micromanagement (and most of the things that add significant micro are optional.) The AI is pretty solid these days too, as AIs go. The developers have been very diligent about improving gameplay.