Schone,
I do exercise CRM with the controllers. When they tell me to do something that doesn't make sense or I don't understand the comm, I ask. I don't assume that the turn right to 090 was wrong when I was flyingwith a southerly heading and just make a left turn to the assigned heading, I ask the question.
And I don't expect them to read my mind to determine what speed I'm flying, I expect them to use their radar. And, if there's a speed problem, I am more than willing to slow down, speed up, go direct, turn left/right for the climb, take a lower altitude to solve the problem. But, until I get the same tools in my cockpit a controller has in his office, there's not much I can do to mitigate any potential separation problems. Maybe when (if) ADS-B comes online I will be able to help out more.
If my company ponies up the bucks for it. And they might not if they can figure a way to wiggle out of it.
I'll tell ya, my company's pretty cheap. Right now we have planes flying w/out GPS/RNAV capability and without ACARs. Guys filling out the paper crew pay logs.