Well, forecasts being forecasts, I'd guess that there'll actually form sort of constantly-renewed group of newbie-editors with /short/-lived participation. How big, anybody's guess. I'd truely like to see what reforms are planned on the ideological/organisational (social) side of the matters, though.
Slightly outside the scope of the mailing list, but if you're interested, drop me an email off-list and I'm happy to tell you everything I know about the various ways we're hoping to enable cultural shifts :)
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Oliver Keyes
Community Liaison, Product Development
Wikimedia Foundation