Before the advances of RNAV, it seems that air traffic controllers vectored aircraft with headings. However, the use of headings also involves wind corrections. Now that GPS (RNAV) has track information, should pilots refer to track instead of heading to "help" controllers eliminate the need for wind correction adjustments?
My understanding of a controller's radar screen is that controllers see an aircraft's track. So depending upon winds, a controller may have to give several "trys" to get the desired track. If RNAV-equipped flights refer to track instead of heading, would this help the controllers? Do controllers expect RNAV-equipped flights to use track despite the traditional phraseology (i.e. turn left heading 360)...instead of changing it to turn left track 360...?
So, what do controllers want pilots to do? If I using track instead of heading, would this adversely affect the controller's work because he/she is expecting me to use heading?