Great Find Jon
These are differently about the best era of GE laundry appliances [ and my favorite as well ] I just wish that I could find a GE Versatronic washer from this time period, I would love to try getting the variable speed clutch to operate properly [ I have a spare clutch assembly that I took out of one about 30 years ago ]
It would be interesting to know what happened to or was done deliberately to that agitator, in any event I would keep it as Ken suggested and maybe modify it further. I have always observed that the straight vane agitator like this turns over a big load better than the swirly vane agitators, the swirly vane are more fun to watch with smaller loads.
If you are going to try to rebuild the old inlet valve don't waste your time unless you have new rubber valve diaphragms, but overall unless you like to play with floods and machines that don't work properly put in a NEW valve while we can still get them.
John L.