Do you prefer variety or uniformity in your musical festival lineups?

So I have noticed lately that a number of major musical festivals are attempting to combine ALL GENRES OF MUSIC in attempt to garner mass appeal and consequently greater audience.

For example, the three headliners at Lollapalooza this year will be Paul McCartney, Metallica, and Florence + the Machine. How fricking random is that trio?

Why is Metallica playing at a festival comprised of mostly pop and radio-friendly artists?

Here is an even stranger group of bands for you: Bonnaroo will feature Billy Joel, Mumford & Sons, Deadmau5, Kendrick Lamar, Robert Plant, and fricking Slayer...let me repeat that...frickING...SLAYER.

How random is that shite?

I think that these sort of festivals only water down the experience rather than enhance it for the listener. I realize that many people enjoy musical variety, as do I. However, I personally prefer festivals which bring together people of a similar mindset and taste. When you book bands under the umbrella of a certain genre, you are able to further channel the underlying mood you are trying to set for the festival (i.e. aggression for metal, energy for EDM, relaxation for blues or jazz, etc.).

After hearing so many different types of bands it would seem to me that you would almost develop musical whiplash and would be unable to process what sort of emotion or feeling that you wish to summon forth. Do I want to bang my head while listening to this? Do I want to chill and relax? Do I want to dance wildly?

Also, I personally don't enjoy rubbing shoulders with so many different types of people at these concerts because you are going to be in close contact with them for an extended period of time. Therefore, it would behoove you to not have to deal with some random shite from someone who is totally alien to that particular musical culture (e.g. the social media obsessed crowds who are too busy holding up their damn phones while you are trying to watch the Metallica concert).

I blame Woodstock '99 for a lot of these issues. That festival had the most random fricking assortment of bands you could possibly assemble from that time period.

Sometimes these things work, but more times than not I feel like there is just too much variety. Personally, I don't want the Baskin Robbins of musical festivals. More times than not, I just want only one or two flavors.