Yeah I saw that as well fabs. The run by chair 5 is a (very) short cutoff right by the base of lift 5 that is quite steep. Likely the steepest run they have. It's so close to where the line forms for lift 5 though that it sort of scares me. The run under lift 5 is one of my favorites though and this steep section at the end will only make it more fun for advanced skiers.
The run you didn't mention is through the woods down to lift 11, which is the run that they set up the boarder cross course on. That run will connect the meadows area with lift 11,. Looks like it could be a fun run. It looks pretty narrow and likely is going to be a blue run.
The run by lift 17 used to be a run, then when vail bought afton and they changed the run under lift 17 (to put moguls on it) they closed it down and it's been closed for several years now. My kids always loved that run, way off to the side and usually had good snow left on it even several days after a storm.
With vails money I wish they would tear down lifts 13,14 and 15 and put one good 4 or 6 person lift in the highlands that went up to the top of that little peak in that area. The bottom of those runs is dangerous as all those trails converge and there are 3 lifts people are cross by each other to get to. One lift there would make it safer.