Historically 2 approaches has been practiced: 1) argue a lot and then do nothing
This happens (I think) because Andrei and Walter really value your's and other expert's opinions, but nevertheless have to preserve the general way things work to preserve the long term future of D. They have to be open to persuasion but it would have to be very compelling to get them to change basics now - it seems to me.
D is at that difficult 90% stage that we all know about where the boring difficult stuff is left to do. People like to discuss interesting new stuff which at the time seems oh-so-important.
