i fully agree with the OP, and in fact it was exactly that what i was thinking about two days ago...how to make the contacts better visible in a realistic manner....
a focus on target button would be horrible in my honest opinion...maybe optional for not full real servers...but definitely not as a "always available option".
the most annoying fact about the disappearing contacts is, that it was not the case with the release version.it was still hard to spot enemy planes, but at least, they didnt disappear completely like spits do now for example.
making the edges darker sounds like a solution...it wouldnt be possible in the case where the aircraft is visible only as a dot of one pixel,...but in that distance, the pixel is visible good enough anyway in my opinion...the real problem starts, when the aircraft is getting closer and switches from being a dot to being a 3d model.
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