When I book my international flights, they usuallly come with at least two domestic connection choices now. Usually 0600 or 0650 on a morning flight, and a 2hr or 4hr after landing of the homecoming international leg.

I usually pick 3+hrs, after standing at MPI for over 2hrs in Oct 2022, and having to go to a desk to TP to the next available regional flight, never do a transfer with less than 3hrs coming home. That also saves the hassle of carrying 3x 23kg bags onto the transfer bus or go for a walk with the luggage trolley rushing to the bag drop before it closes at -30.

When I book full BP fare, then it says I have flexibility, and the domestic leg is usually full Y fare, so no cost to change on the day. If I book early, then it is restricted, and they say you aren't meant to change to an earlier one at check in. But I say I would now free up a seat at PM Peak. More flexibility for the next GE wanting to change their flight