Also, the readback of altimeter settings - I'd say this is pretty much
mandatory in the US as well especially when flying IFR. It's pretty

I've never read back a setting in the US, ever (VFR or IFR). They give them
when
you change freqs... "Roger 96S, Salinas altimeter 29.95" but I just
ack this with "96S". However I do always give altitude in a call
so they can cross check the mode C... "Oakland Center, Cessna
5296S level at 7500" or whatever.

John