[Fian]

My concerns for SE4 that I would like to see addressed in SE5 is micromanagement. To address I would suggest the following:

Almost no facilities:
You set sliders (priorities) to determine what is built. You could still have a research center 3 facility, however you wouldn't be personally building it on the planets. This basically means you could have it the old way, but a planet governor controls based on the slider. You would click Y/N on some checkboxes for SpaceYard and Supply Depot. Terraforming would not be a facility, but one of the priorities that you set for a planet. Also, population moves automatically between planets (sort of - see below)

No direct control of Population Transports/Troop Transports/Fuel Ships
Instead, like MOO2, you have freighter fleets for those areas (or one, I would suppose if you prefer). You might capture a new Oxygen breathing race in combat, and since they are living on a Hydrogen planet, you would tell the planet administrator to move them to an Oxygen planet and replace them with Hydrogen breathers. Based on the size of your population fleet (and how many other demands you have placed on the fleet), will determine how quickly the population on the planet is replaced. Troop and Supply fleets would be a bit different. Your fleet/ships will have a support cost. The support cost goes up or down depending on how close you are to a supply depot. You might also totally cut off support, if there is a blockage between the fleet and the nearest supply depot (which would make the raiding of supply lines - a key tactic in warfare - a valid strategy). Keep in mind this support is not for just fuel. My vision is that when you invade planets, troops from your ships crew do the invasion, not a separate troop unit. So if your supply line is cut, you do not have any more troops being replenished on your ships. Also, through combat and normal attrition, troops die, so in theory you could have pilotless ships if your supply lines are cut off long enough.

Another thing for SE4. On the main screen, show icons to indicate if a planet has a supply depot or spaceyard. Would make life easier than clicking on all of the planets in a system.