Spitoon.
Do you mean "no less important than any other instruction?"
World of Tweed.
What flap setting are you using to achieve your 160@ 4. Is it the maximum flap available at that speed? If it's not, you're not trying. If your stabilised criteria is 500' you should be able to sh*t it in, (1000' gets a bit difficult)
Speed control is one of my constant bitches. So many times I see guys winding it back with absolutely no thought for what is going on behind them. If ATC gives you a speed. Stick to it or tell him/her. I always tell any offender to my right, that speed (within our operational limits) is ATC's responsibility within the TMA.
126.85 I think you will find a lot of the problem is caused by guys "playing controller" with reference to TCAS. You have my sympathies.
Maui