My ZIISS would look just like that if I street drove them another 3k street miles or so I think, 22k DD miles, 4x track days, 1x season of autox (~50-100 runs) and they've worn similar to yours (no cords yet, but similar tread depth) and I'm going to MPSS as I've got RE-71R's for autox and I'm not trying to set any records at track days. My rear camber has floated around -1.5 to -2.6 degrees over the past ~2 years I've had the tires, my front camber is in the -3 to -3.6 degree range when driving hard (zero toe at max negative, toes out as I go positive) and I go full positive on the camber plates for street driving, iirc about -2 degrees, -0.3 degrees total toe out at that setting. Totally happy with them but they heat cycled out within the first year I'm fairly certain.
As above, seems like you're in a life vs. grip conundrum. And yes, trash when the cord shows, ideally you'd be done based on wear markers and tread depth based on manufacturer recommendation (they know when the good rubber runs out, some tires are good to the cords, some aren't), but we're all trying to save a few bucks.
