Universal Studios South Campus is just a generic name. Likely due to the largest portion, 340 acres, is under the name Universal Studios property management - site development south end. Which is a holding of Thomas Enterprises. That name and Universal Studios Development, are just leftovers from when it was owned by Universal/Blackstone.
The mention of the road developments is to keep the developer from building a huge development and have it all dump onto the current overloaded road system. It spells out that if they develop something with more than so many daily trips, that they cannot build anything else until the roadways are improved. Thus forcing the developer to cough up $$ to do the improvements. Since the roadways are on their property. No different than a subdivision builder have to build the roads then the city/county takes possession of the completed roadway.
As of right now there is no indication that NBCUniversal/Comcast has any dealings with this property. It looks as if either Thomas Enterprises is ready to develop or sell the site whole or piecemeal. He will still have to come before Orange County Board of County Commissioners with a site plan for any development. As of right now there are no platted sites in the 340 acre parcel. The right of ways for South Kirkman's extension are already defined in the current plat.
Give it time, most likely this will just be a build out of The Boulevard site he proposed years ago.
There will be some changes however, he is now not asking for any residential units, only hotel/timeshares. The initial plan was for over 5000 residents on the site in condos and single family housing. But the recent plan approved by Orange County Board of County Commissioners now is only allowing Hotel/Timeshares on the remaining property. Portions of the original site have been subdivided and developed into apartments and condos, but the remaining cannot.
As far as "attractions 300+/- acres" there are deed restrictions placed on the site by the Vivendi sale that limits attractions to smaller projects. Much like those already found on I-drive. With a $2 Million cap per project, thus keeping anyone from building anything substantial.
In the end.. Just expect a second golf course, more shopping centers, a couple more hotels/resorts, and toss in a few roadside attractions. While I personally would love for it to be the 3-4th gate like intended, Vivendi sold it off in a fire sale, when times were tough. I was working for Universal Escape when we bought that land, but it seems the previous ownership group saw no reasons to save it when they were broke. The same goes with the North Employee lot becoming apartments.
Universal will have to be creative with any further expansions. By possibly moving support services like Merchandise, Food, administration and sound stages off site. Possibly near South Kirkland and Sandlake where there are industrial zones, but also are only 10-15 minutes off property. NBC/Universal already has its Golf Channel Studios in that area.