CA, I don’t think the idea is to say to the P2: “...and then reduce the speed to 180kts flap 5, asking for the flap lever to be moved then using the MCP to select the speed, then arm the glide slope capture with the APP button...”, etc. etc. It's more like “Supposing we get a sidestep on to the parallel runway at a late stage, how close in can we sensibly do it, and is it going to be different IMC/VMC?” or “If they clear us for the RNAV onto the opposite end, not the ILS, what are the traps to watch out for?” or “What do you think would be a sensible speed/config at XXXXX, given it’s a 3.3deg slope with a possible tailwind and a density altitude of 9,000'?"
I can’t speak for anyone else but that’s how I generally run things; you’ve all (including “heavy” pilots who may be up the front for the approach and landing) had a chance to discuss what may catch you out and how to avoid/mitigate it. That makes it a bit easier to monitor, although there are always the “unknown unknowns”.