Didn't play either, but Mindseye literally looked like it barely worked and it was super bare bones as far as gameplay goes. When I saw the chase sequence where you could hold down the fire with the assault rifle without ever needing to reload the gun, I knew how incredibly half assed that game was.
Redfall looked like it could have been an okayish co-op game for 34.99 price tag on release. It had major flaws but I heard some people still having some fun with it.