Regarding stl and templates a agree with:
root.cern.ch/root/roottalk/roottalk06/1015.html
root.cern.ch/root/roottalk/roottalk06/1016.html
BTW, one of the reasons for Rene to develop ROOT was to ensure that the
framework will still be available in 20-30 years.
As you mentioned this is no longer the case with MacApp and may not be
the case with QT (although both MacApp and QT have the advantage that
the source code is available, which would not be the case for commercial
frameworks)!
So, I agree with you, we should stop here.
Best regards
Christian