From my point of view (in the last 1/4 of flights out of Denver, it was a mess. Unnecessary holds, missing phraseology, high approach into Vegas (had to dive for the runway after given a visual 5 miles from the field at 6000 ft), taxi confusion in Vegas, long delay due to using only one runway at Denver (15 in line at one point, took 65 minutes to get off the ground). And the list goes on and on.

Some of the DVA pilots that were stuck with me on that conga line can attest to this. I almost went and finished my flight offline. Took 3.2 hours to get from Denver to Las Vegas: https://www.deltava.org/pirep.do?id=0x13aa86

To play devil's advocate, when you have 50+ planes shooting out of an airport for the same destination, delays like that should be expected and planned for.  There's no way that the departure rate could have been upped significantly without causing issues with ZDV/ZLC meeting the MIT requirement that was set.

I second Dhruv's point that VAs should focus on spreading out traffic instead of trying to set a record for longest high-tonnage conga line.  At least in my opinion it's a lot more fun merging arrival streams (especially in a final box) than it is to sequence a conga line.