With this in mind, I have three questions:
1) Is it possible to create an edition of D&D that could largely satisfy 90% of the player base?
2) If it's not possible now, was it possible in 2007, before 4e was released?
3) If it's not possible (now or then), what should Wizards, or whoever owns the D&D IP in the future, do about it?
1. No, the player base now involves too many different types of playstyles that were brought from other areas with the newer additions. (dating back to the 80's in regards to "newer editions")
2. No, see above.
3. Either you support your entire line in some fashion and agree that old and new editions can coexist and you can make products for all of them, or you just pick something and hope it turns out good for the game, or for WotC is most concerned, good for revenue.
Too much damage was done with Moldvay v Mentzer, D&D v AD&D, 1st v UA, 1st v 2nd, 2nd v Player's Options, AD&D v 3rd, 3rd v 3.5, 3.x v 4th v Pathfinder, 4th v Essentials (it seems to be starting as another half edition fracture).
With all that fracturing of the gamers...there is little that can be done to bring them back together without accepting a method that puts something for each of them in print and letting the players choose, or just deal as best you can with whatever it is you are putting out now.
D&D really is too many different things now that there will enver be a unified community again, nor will players ever meant he same thing when uttering the words "I play D&D." for communication to begin without clarification what you are saying when you say "D&D".
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