My idiosyncratic list of things that don't seem quite right on the Neo (well, my Neo at least!). None are deal breakers (although I would really like the Facetime bug to get fixed). Have you found stuff that isn't quite right?
1. Facetime - video is zoomed in and I can't seem to change it to the normal view. I see normal view until I am on a call, then basically just my eyes and nose for the person on the other end. Reading elsewhere it might be tied to Center Stage on other machines, and so perhaps its absence on the Neo is messing something up?
2. External display (Studio Display, original one) - two problems! a) choice of resolutions is very limited and only default (1920x1080) and 4K are crisp. The intermediate setting (2560x1440) is some gosh-awful fuzzy rendering that really isn't useable. I suspect this might be a limitation of the A18 Pro? b) External display, if you choose Advanced>Show Resolutions as List, there is no way to go back to the default icon list, even if you reset the switch. The list has extremely limited choices.
3. Speakers - OK, more of a whine here, but I hope Apple redesigns on the next iteration. While the sound quality is good, it is too dynamic. At a given setting quiet sounds are inaudible and loud sounds are annoyingly loud. Also, the sound is super directional: OUT from the machine, rather than UP towards the humble listener, so you lose much of the listening experience.