The understanding I have is like Greg said; one receptacle for each car space, 120/20 and exclusive (dedicated) to the garage. GDO and lighting within the garage can be on this circuit, IMHO.
Now, the OP is running a MWBC to the garage as I read; I can't 'see' where he came upon a requirement for a 'switch or disco'?? MWBC on a 2 pole CB at the source solve this.
He mentioned that a individual circuit is not required for each outlet, which is correct, although it may be a good design option (upsell) as commentary in the '14 changes seem to lean toward EV chargers, although in the 'real world' 120/20 is insufficient.
This was a 'tough' change when we put the '14 into effect; but the ECs that work for the builders caught on quickly.
