Cheers Scott.
Until I can really understand what's going on with my FA 35mm, I've elected to keep them both. I will need to shoot some actual tests before long to nail down this particular issue.
When I'm shooting on a tripod with a measured sort of approach, the A 35mm is what I go for more often than not. I typically shoot right around f/11, often focus stacking for extra foreground DOF if the conditions allow. Though I miss Live View, I don't have much trouble manually focusing with accuracy through the viewfinder in good light; for anybody who could do the same, I'd say the A 35mm is a good bet. Corner vs. center sharpness trades off a bit differently than the FA 35mm, and I believe there's a bit more chromatic aberration on the A version of the lens. But those factors are splitting hairs, in my opinion, not a major factor either way. Based on what I've seen, I'd say for landscape work a good copy of the A 35mm is a very solid bang-for-buck on this camera.
I do go for the FA 35mm sometimes when shooting on the tripod, but where I typically grab it is when I want to be more dynamic, walking around & "snapshooting" on the fly with autofocus and (usually) wide aperture. It does a great job at that.