The feedback already given - it runs into many thousands, covers all aspects of the forthcoming system. At this point, it would be futile to even go to the trouble of submitting it.
IMHO, they had , at the beginning, to find a buffer for the complaints. Gabe was chosen. I get a powerful impression that he is being fed, albeit at a higher level, in the same manner that we are, ie.. he knows little over what is passed on to him. This could explain the constant distortion in updated news and backtracks to correct wrong news.
It is now, superfluous, to consider builds as progress. That has already been accomplished in the RTM, which is , as we speak, being "debugged".
Any builds now , delivered to we peasants, will only be sops to keep us happy, and will have no bearing on the final product. And yes, for these reasons, the RTM has , already, been "locked down".
Just my opinion.