<<<So, my question is: from your view point, as long as I remain well clear of your CAS (say over 5 miles) do you want to hear from me?If you do, is there much you can do for me anyway, or I for you? >>>
No, no, and almost certainly no!
I speak as a controller in a busy TMA but colleagues at much quieter places may have a different viewpoint and may be glad of someone to talk to. Around a busy zone if things are all going swimmingly - you enjoying your flight and us slaving over the big jets - we're probably mutually unattractive. However, if you have any problems - unsure of position or if some emergency arises for example - then do PLEASE call us ASAP and we'll do everything we can to help you.