I let FSD 12.3.6 "drive" me home last night from meditation class, about a 45-minute jaunt from Newburyport to North Reading, MA.
The feeling was pretty positive, not for any big new changes in behavior but rather due to an increase in trust overall. If the known weak spots would just get fixed (intersection lethargy, especially at stop signs, confusion at certain intersections due to bad map data or who-knows-what), this thing would be seriously good, like perhaps ready to bank that first '9' (at least psychologically, if not verifiable through incident statistics--which we don't even actually have lol).
So I'm really hungry for 12.4 and to find out whether Elon has been talking smoke and mirrors or other automakers will actually be forced to begin considering licensing FSD.