You know my thoughts from the other thread since you included my idea. I think the Sherman puts the golden age at the appropriate time (the late industrial) and accurately represents American production during that age. I kinda like the Marine idea also, but I dont like the idea of researching an optional tech to access my UU. The Cav idea is nice but I think all terrain as roads is too strong unless the price is changed. The minuteman is interesting since there is only one other musketeer based UU. I dont like the supercarrier or any ship/plane UU because I want to pop a leader when using it.