Sharpshot, I spend some time in IMC in class G, not class D.
I don't bust class D, I either keep out or get permission and keep ATC informed.
I can't help it if some people go into class D without permission - but it is not only, or even mainly gliders who do. I gather there were about 30 busts of Stansted class D by spamcans etc. going into the PFA rally in just one day.
I happen to agree with you about TCAS - unfortunately I have no room, power etc. to fit a transponder. If the CAA's pursuit of a lightweight low cost transponder comes to anything, I will be in the market for one.
Gliders are not the only things that might be IMC in class G. If the airline community want to keep their passengers safe, best stick to CAS wherever they can, and not take short cuts via class G, particularly near gliding clubs. (I know there are places where class G is unavoidable - I'm talking about where it is - I have seen the airmiss/airporx reports, and the claims by airline pilots' representatives that saving fuel takes priority over sticking to CAS.)