Now this? This I agree with. I mean, sure, I might disagree that there's no need to add in some optional material and that it wouldn't improve the game to have optional sub-systems that support other styles of play better than the existing systems, but, at the end of the day, I'm still playing D&D twice a week in two different groups. And that's not likely to end any time soon.
I just wonder how people who keep telling me about all these fantastic systems that support all these different styles of play are going to feel when the new DMG comes out later this year and it's full of systems like the Bastion system which gamify broad swaths of the game that was formerly left largely free-form.
Then again, I could be wrong and the new DMG won't be filled with all sorts of new systems. I have a sneaking suspicion that all these folks who keep talking about how 2014 has all the support anyone could want are going to be rather disappointed to learn that the writers of D&D don't agree and are about to give us a big, thick, juicy book of all sorts of mechanics.
It's going to be an interesting year.