well I tried it today and I just want it disabled as it's too distracting and takes too long to figure out what's happening. With the old radar I could glance at it in 2 seconds and immediately know how many teammates I have left, where they are, and what is the situation with bomb/hostages.
Now rather than simply looking and seeing a few dots, I see Xs, radiating circles, little blips and a variety of other unidentified crap that I don't need in a radar. Even worse, it doesn't even display the whole map. Again, for someone playing since 2000 it is a very big stab in the back on Valve's part