410,
A few months after the 777-300 starting coming in we got an Operational Memo explaining that you like/require a slightly faster approach. I'd suggest just reinforcing this expectation by telling the approach controller as soon as possible after coming on frequency.
Flaps,
About the late clearance. I'd say that if you see the a/c ahead has cleared the runway but the r/t is blocked, leave it to the latest point at which you can safely carry out a go-around, then go around if no clearance has been given. Stating the obvious here, I know, but don't land without a clearance! I had one a/c proceed to land even after I had told it to go around. Lucky for him there was nothing else on the runway than the a/c vacating.
Gonzo