One month update. I've got about 800 miles with it now.
I've gotten comfortable enough with it that I've been exploring the different PTM modes, flat foot shifting, and one luanch control start. Butt dyno says that "Dry" mode is a solid 20% power cut, and maybe 10% for "Sport". "Race", of course, is the full beans. "Sport" is enough to have some fun hanging the rear end out, but slows things down enough to give you a little more time to process what's happening. "Dry" cuts enough power that it doesn't really want to get loose at all. It feels more manageable than even my Miata... I definitely get why GM gets a lot of praise for their PTM system, it's legitimately world class tech.
Flat foot shifting is what it says on the box. I love that it's always there in any mode, and the noise on gear changes adds that little bit of drama for good measure. It's also a lot easier to play with on a regular basis. Launch control is especially dramatic with the exhaust open, and impressive in how well controlled it is. Though I feel like this car really isn't about what it can do in a standing start. Again, though, I appreciate the simplicity of how to activate it.
Magnetic ride control; again, this is world class tech. "Tour" feels like what my Golf R was like in all modes, comfortable and controlled, but undramatic. Perfect chill out mode, but not so soft as to feel disconnected from the road. "Sport" ups the sensation of speed without making it feel like the struts have been changed out for Ebay coilovers. I actually find myself at lower speeds in "Sport" because of that sensation, which is great. It almost gives the car a bit of a "slow car fast" feeling. Almost. "Race" is just a bit too brutal for most uses, though it's by no means as bad as something like a Camaro ZL1 1LE or a Focus RS.
Lastly I just wanted to touch on the exhaust note. It's taken me some time to pin down the love/hate opinions on it, and I think I finally figured it out: most of the negatives on it came from reviews that were done in automatic press cars. It's a case where something is actually too good, and takes away from the experience. All those tight gears means the engine is always sticking around very narrow RPM ranges, so you don't get much tonal variety. Hold any engine at a specific RPM for a long time, and tell me that's an enjoyable sound. I don't care what engine it is. The manual gives you flat foot shiting timing cuts, wider sweeps through the revolutions between gears, and all the little imperfections that a dry clutch transmits through sound and feel that a torque converted automatic will mask. It's no supercharged V8, but the manual adds so much to the tonal experience of the V6. If you can drive a manual, buy it in manual.
Anyway, that turned in to quite a long-winded post, but I hope that provides some valuable owner insigit for prospective buyers.