exactly. Tax Office, Bank, Slums, Estate, and Mansion are all equally worthless buildings. (tax office might have some hidden use). Pubs and Theaters are also underpowered, and the monastery is pretty weak too.
I have found that on a Size 5 capital completely devoted to science, Conclave and Gallery can come quite handy ... but only in this situation. You need at least 4 Schools or Universities to make building a Conclave worthwhile. Considering this, its pretty silly how early conclaves can be built. Although I guess having 16 libraries or 16 Studies might also have some good Conclave effects ... its probably impossible to have that many libraries/Studies while still not having the School tech.
I am in love with Forges, Barracks, and Armories. I think something needs to be said about the awesomeness of exponential Iron mining with the use of Forges. I'd say its pretty accurate, that at first you might get one or two Iron troops ... and then eventually you could wield a whole company of Iron users.
I think there should be 3 iron levels. Dull Iron, Pressed Iron, and Re-Folded Iron.
Dull Iron could only cost a little bit of Iron (5?) and be only slightly better than copper or leather. Pressed Iron could be significantly stronger than Dull Iron and cost more (10 or 15?) a piece. Meanwhile Refolded Iron would cost twice as much Iron as Pressed Iron and be twice as strong.
Wooden Spear, 3 attack, 5 wood
Oak spear, 4 attack, 10 wood
Ancient Oak spear, 5 attack, 20 wood
Copper Sword, 5 attack. 10 copper??
Dull Iron Sword 6 attack, 5 iron.
Pressed Iron Sword 9 attack, 15 iron.
Refolded Iron Sword 18 attack, 30 iron.
Alternatively, a Refolded Iron Sword could have 12 attack and 6 defense, since Refolded Iron was MUCH more reliable for blade-to-blade parrying ... refolded iron would shred through non refolded iron ... or essentially refolded iron would last and the other blade would get dinged, chipped, and bent. Most parrying was done with either the hand-guard or the lower shaft of the blade, but still.
A Smithy could be a building available around the time of the forge (or later?), and could allow for units to be built with 20% less metal. Only one can be built per city, it uses 1 Space, and it allows for Refolded Iron weapons/armor to be used for Unit Training. As in, if you don't have a Smith you can't train that unit designed to use Refolded Iron.
Alternative usages to refolded Iron (other than double the Attk/Def) is to increase combat speed, dexterity, or dodge/flexibility. Only increase the metal cost as much as you increase the Attk/Def however. For instance, a suit of Refolded Iron could use 50% more metal, and only weigh half as much ... so the Iron increase would only be 50% (or from 15 iron to 23 iron). However then speed/dexterity penalties of the Iron would be half. So lets say a full suit of Pressed Iron (or Dull Iron) gave -4 mobility + dodge penalty. A full suit of refolded iron would only give a -2 mobility and dodge penalty. (while Chainmail would give -2 and leather would give no penalty). However, assuming that we won't have mobility/dodge penalties, doubling effectiveness and doubling iron requirements seems like the right direction.