Also, saying that the base game should have the "feel" of OD&D just seems wrong to me. OD&D is at the extreme end of a wide spectrum, and it simply does not appeal to many D&D players. You can't use it as a foundation for common ground.
TB and everyone else, take a deep breath. Now let it out. They are not going to build the core around one edition only.
1) They have already shown tech from various editions at D&D XP that are in the proto-core (Themes - 4e; DR - 3e; Stats for Skills - OD&D; Vancian Magic for some spellcasters, other types of casting for other spellcasters, etc).
2) Something that evokes OD&D, AD&D, 2e, 3e, and 4e are not directly supporting those versions of the game. The idea is you can dial up and dial down the complexity of the game and emulate said version.
3) 4e (my current and favorite version of D&D) and 3e are on the high side of the complexity scale of rules and I do not expect it to be a major part of the D&D Core game that will be rules light and quick. There will be elements of those versions in the Core Game but a true emulation of 3e and 4e will require adding more complex modules.
One last minor thing that bugs me is his talk about this big divide between what players decide and what DMs decide. Those lines imply a mentality of "the players choose their characters and the go with whatever campaign the DM wants to run," which is not a philosophy I agree with. If you ask me, there should be more discussion of creating consensus within a D&D group, rather than drawing battle lines between players and DMs over contentious issues.
I think you are drawing too stark a line there. Monte is correct that their are dials that DMs and Players typically control.
If I am DMing I usually choose the version of D&D that we are going to use (with player input) and I might put restrictions on classes, races and themes depending on the story of the world I am basing it in (No divine classes in 4e Dark Sun is a classic example). The players handle what characters they are building for said campaign (with a little input from me).
Most DMs and Players do this automatically. The only time I have played and DMed in everything goes campaigns has been in Organized Play and eventually even those venues have limited the scope of play.
One last thing, WotC has to lay out the vision otherwise people are going to look at the proto-rules and not know what to do with it. The blog post by Sly Flourish over at Critical Hits basically tells us that expecting the playtest to be like 3rd or 4th edition is going to be a shock to the system if you are not prepared for it.
Frankly, I am happy that WotC is shooting for the moon with this edition. The time for half measures is over. If they want to recapture the magic that can be D&D they need to go big or go home. That is scary because failure can have really bad consequences. That is why you get high rewards for high risk, but there is that pesky risk.
Thanks,