Leaving aside the Federal Reserve for the moment, I have put together a couple other National Wonders to help out some under-served techs. I'm beginning to like National Wonders on the grounds that they don't increase complexity on the level of a regular building (since a regular building can be built in every city or at least a large chunk of them) and don't need to be super-splashy like World Wonders do.
The
National Redoubt is based on the Alpine fortress that the Nazi leadership was rumored to have at the end of WWII. While it wasn't real, it could have been. I'm trying to help the
Guerrilla Warfare tech, which right now only sports the
Artillery unit and the
Ambush promotion.
The National Redoubt grants a large bonus to defenses, including against Air and Espionage, although the building defense won't matter very much against tanks. It also provides the
Stealth I promotion to units for free, which you normally can't get until the Transhuman Era and the
Invisibility tech. I decided against doing
Guerrilla or
Woodsmen promotions because they are a little bit too limited, and
Drill didn't sound right either, so I went with
Stealth.
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