I concur both with Markus K and with Ben. What sets Wikipedia apart is its
democratic approach. Exerting too much control, especially if in the hands
of a "trusted few", is at cross-purposes with the Wiki way and moreover not
scaleable.
The question regarding edit drift and notifications raises another question
for me: How, if at all, are the downstream edits being communicated back to
the source databases? Although in some cases the edits will be annotations
that the source mightn't care about for their particular user base. But
what about factual corrections? Wouldn't they want to know these things and
correct them at the source? Perhaps this question belongs in a different
thread. I defer to you on that.
Julie