I installed 2023.12.1.1 last night. I am happy with the large font. I think some of the main items (speedometer) could be even bigger, but overall a big improvement. The larger font seems to apply to everything on the screen: not just speedo, but nav directions, control panel, etc. And I like that they put in a bigger font everywhere without re-flowing any of the controls: bigger text using the same layout as before. I was worried that (and assumed that) whitespace would get proportionally larger as well.
But what I mostly like is being able to change wiper speed with the left scroll wheel. That's long overdue.
Mute/hang-up on phone calls is nice, but I don't do enough calls in the car for that to be huge.
One minor nitpick of the wiper and phone controls via the left scroll wheel: it's not visually obvious that it's possible. There is a "<" or ">" over the on-screen buttons to let you know about the options, but the contrast is low. Probably many people will never notice, or never understand those indicators.