I am curious as to what everyone thinks is the best, non special building and which is the worst.
I suspect that the answer for best building will overwhelmingly be Neutrality Learning Centers. For where they fall on the tech tree, they are simply awe inspiring. I also like how it seems a bit sinister due to the red colour it has. The next best, I would say, is the Stock Market. You get economy, some morale, and some influence all at once.
For worst building, I would have to say its the Propaganda center. A 10% loyalty boost just does not do that much, and you probably get more help in keeping a planet by building an Embassy. Embassies themselves are somewhat questionable. I tend to build one on planets that I put farms on. Farms also fall under the never more then one rule in terms of usefulness, as far as I am concerned.
Planentary defese buildings also suck. I never build them, but I can concede their usefulness. Having your ships in a fleet for defense is better then letting the enemy pick them off one at a time, unless your opponent has crappy engines, and you want to stall them. The building that helps protect against invastions by giving you a bonus against invastion might be useful if the AI was more aggressive when it came to invasions. But I have not seen the AI do much with soldiering, and I tend to max out the invastion tech path, so I dont much need that extra boost.
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