I would prefer license like GFDL for everythink, but for pictures where a
right owner (e.g. institutes) has a higher commercial interrest Creative
Commons licenses without the right for commercial use could be a working
compromise for both interrests.
I think you have misunderstood the purpose of Wikipedia. It is
supposed to be a free encyclopedia. This is not a loosely formulated
"interest", it is a specific mission with a commitment to specific
ethical criteria.
Because I have doubts about the Creative Commons licenses we
should go on with Richards idea of "free use for educational
purpose"
No such idea came from me! On the contrary, I explained why this
would be a bad mistake. If Wikipedia did this, it would not be a free
encyclopedia any more.
I am sure you mean well with these proposals, but proposing for
Wikipedia to throw away its mission and its commitments is not
the way to be helpful.