By and large, I like this plan much more than the Eastern Gateway (heretofore referred to as EG). As TP2000 pointed out, there's actually a net gain in parking with this plan compared to the EG, and they get to couple it with the extra revenue that the hotel will bring in. So this may actually end up being a cheaper project that improves resort operations while still bringing in higher profit margins. I am huge on land use, and this seems a much better use of land.
The most interesting thing now is to see what Disney does with all that land originally planned for the EG. Somebody here already suggested it should go to employee parking, but I'll take it a step further. Not only should it go to employee parking, but Disney should consider relocating a couple of backstage spaces into what is currently the shuttle transit area and linking that to the EG employee parking. This could conceivably create a shared backstage area with direct access to both parks, leading to a more efficient use of land by eliminating facilities that are, right now because of distance, redundant in both parks. Things like dressing rooms and break rooms for Main Street and Buena Vista street could be shared, for instance, or food and merchandise warehousing. This potentially frees up room for more theme park acreage on the northern parts of Disneyland and the southern parts of DCA. Again, it's all about better use of land.