Look at the dungeon info, ARF requires an ilvl of 142 while expert dungeons currently require 145.
I know that, that's why I said they could have easily upped this to 145 if that was their reason for not putting it on the roulette.

Having 1 story dungeon + 2 side dungeons on the EX roulette had become the standard practice anyway since... 2.4, was it?

Then you would see people complaining about low geared new players in the roulette stoping to watch cutscenes and 'wasting other people's time'.
I don't recall Snowcloak or KotL having this problem. :/

And really, I think Mid had more of a pre-battle cutscene than this place did.