This is a great board! It's not often you see Develop be such a key card.
I would have attempted a full-on Develop-Menagerie engine. Salvager and one HoP for buy/gain, and try to develop salvagers/quarries into Inn and Menagerie on deck in addition to Estates -> Menageries. One of each treasure gives you enough for double Province ($16), which is enough of an engine incentive for me. Harvest gives money, HoP into Province late, too.
Feodum gives the money player legs, though, too, and both players can develop Bank into Province/Gold, so it could be a good race. This looks fun.