17 Pounder is a good unit but the 75 fuel and 20 popcap is way too much. It's in an awkward spot where it's hard to get mid game because of the 75 fuel, but then when the fuel isn't a problem in the late game the 20 popcap generally prevents it.
Making it too cheap could make it a bit OP in team games but certainly a popcap reduction would be in order.
