Ok, the description of the Mind Control Center says it causes a planet to defect almost instantly when it revolts. However, I have yet to actually notice any change with or without it. The stat window for it says it grants a +100% economic bonus, which it also doesn't do...

So aside from costing a lot to build, does the Mind Control Center actually do anything?

The Secret Police Center: Gives one planet a +20% to morale, the description says it adds to the base morale, but I don't build it... ever... I'd rather build a cheap Entertainment Network with it's +25% bonus.

Propaganda Center: Same as with the Secret Police Center, just +20% to loyalty instead, it's not a 100% gaurantee like the Reeducation Center is for stopping planets from defecting.

The Galactic Guidebook: Worthless, by the time you build it, every anomoly is gone. Also, it doesn't enable surverying on every ship, it just reduces the cost of the survery module to '0', so it will still take up space.

The Advanced and Ultimate Miniaturization techs: Somewhat useful, but not as useful as they should be since for some reason most components increase in size at these two techs, which is kind of the opposite of miniaturization, don't you think?

Gravity Accelerators and Hyperion Shipyard: Woohoo! A WHOPPING +1 to speed for each! <~~ Dripping with sarcasm.

Good and Evil alignment's unique temples: Amount of trade stolen from other good/evil races isn't usually significant enough to matter in my opinion. Also worthless once other good/evil races are defeated.

The Temple of Neutrality: While it does draw enough from tourism income of other neutral races to be somewhat useful, it still becomes worthless once all other Neutral races are gone.

The Doom Ray: Ok, it's good if it's the strongest weapon you have, but after all miniaturization techs are researched, it becomes to large and expensive to be worth the damage it causes compared especially to the Black Hole Eruptor.

On a massive Hull:
Doom Ray: Size 16 Damage 22 Cost 150 1.375:1 damage:size ratio
Black Hole Eruptor: Size 14 Damage 25 Cost 160 1.786 damage:size ratio
Black Hole Generator Size 12 Damage 16 Cost 100 1.333:1 damage:size ratio

Cost aside, the Black Hole Eruptor has by far the best damage:size ratio while the Black Hole Generator has the lowest damage:size ratio. The Black Hole Generator may have the lowest ratio, but it costs a lot less that the others... Ratios with costs added:

damage / (cost / 100) : size ratio

Doom Ray: 0.917:1
Black Hole Eruptor: 1.116:1
Black Hole Generator: Still 1.333:1

So cost factored in makes the Black Hole Generator the best, and puts the Doom Ray even farther down the ranks... (Metaphoric Expression)

Anywho, I'll stop typing now, I can get very long-winded as some people know!