That's actually a very good revision, though I actually have some minor issues with the redesign as well. I've actually put a lot of thought into the Wizards site myself, since I was once an admin WizO and did all the design work for a major WizO intranet site that tied into the design of the rest of the Wizards of the Coast site. The site never launched due to the shift towards Gleemax taking the forefront of the Wizards online initiative and the adjustment in the way the WizO team was organized (which meant eliminating the Admin WizOs and whatever projects we had going all together), but the time spent on the project left me intimately familiar with the overall site structure of the WotC pages.
First, allow me to say that as harsh as the original video review was... it was pretty well spot on and a little more gentle than I had been in the past. There are a lot of other issues that could have been mentioned, including w3c compliance, branding, and organization/hierarchy, but for the most part it hit the most important ones.
That said, I do have a few issues with the new design as well...
All articles are created equal
The new site makes no distinction between the different types of articles, and offers no obvious filter for selecting a single article type. Theoretically this could be done from the Archives page, but theres no reason to limit usability in that manner. A single line of links below the "News and Features" header that read View All | Dragon | Dungeon | etc... and operated some AJAX style filtering code would be the easiest/least obtrusive manner to add that to this design, but there are other ways to do it that might be more integrated into the site (personally, I would like to see the different article types branded with a specific logo for each at some point).
Really thick header and masthead
That big masthead area looks great on the front page, but would be far too large for subsequent pages. Eliminating them entirely would result in fairly boring pages, but there isn't any way to really scale them out properly. Your options, then, are reduced to an entirely different header structure on backpages (less than ideal and a bit jarring in transition) or a slightly modified design that would place decorative elements in less valuable real estate. Using your World of Warcraft example, Blizzard uses far narrower headers to announce new articles (on the main page) or highlight the key idea (on back pages) while moving much of the decoration out of the primary text column.
Black text on a white background
Tiny black letters on bright whiteness is hard on the eyes (not any worse than what they have currently, but certainly not an improvement). Designing towards readability, especially on a website that tends to favor large blocks of text, is very important and was something that was missed. That said, it is a bold contrast against the primarily red and black, so design wise it is definitely your best option, but usability will suffer.
Looooooong for a front page
While I admire the effort into making the article stubs legible and interesting, they stretch the page out far more than it needs to. The goal of a front page is to direct traffic where we want it. If the user has to scroll too far, it might be easier to just go to the archives to find the desired article. As an example (again, using WoW's website to illustrate, since that's familiar to the both of us), about half of the page content displays within my monitor (that is to say, that I only have to scroll once to view everything). This is about the same case as Wizards current design, and tends to be about the desired length for most of my own work as well. In comparison, only about 1/4 of the D&D redesign shows up in my monitor. That means a lot of scrolling, and more than likely, a loss of visitors who are too lazy to dig that far (you'd be surprised).
BRANDING
The biggest problem with your design is branding. It's a great looking site on its own, but held up next to the actual D&D 4e paper products, the two have very little in common. One of the major draws of the WoW site is the fact that the website is consistent with the look and feel of WoWs graphic interface. The same should hold true for D&D's site, though at the moment its looking like something of a messy combination of 3.5 and 4e. The redesign looks like 5e
.
Be that as it may, I really do think that the redesign is an improvement, though there are areas that I think it could have gone a bit further even. Just as an intellectual exercise, I would almost like to throw something together to see what I could do with the D&D site... and I have the rest of the day off anyways... I may be back...
I still do work with the Wizards of the Coast online team, though not in the same capacity as I used to, but I'll definitely do what I can to make sure that these complaints don't fall on deaf ears. At least on my part, I will always be championing a better site design.