Things are hopefully changing in the not too distant future
So approximately when should we be on the look out for these changes?
by using the radio and squawking with altitude... ahhhh... right...
I was reflecting on your comment. It is to everyones disadvantages if some choose not to talk or squawk altitude. However, I suppose there is a chicken and egg. There are those who dont because they perceive no benefit from doing so. Perhaps that might change (as you have hinted). If a service was available of the type seen in America aircraft should be mandated to have a transponder.