It seems this is the first review for this, and honestly, I’m not surprised. To begin with, these were difficult to find, and as far as I know, not even offered on Crunchyroll. Despite that, I managed to get ahold of them and watch them-- and it was honestly completely worth it!
They take on a similar format to the episodes in the first two seasons, except that they contain many more references to other anime and also tend to have even less plotline than the seasons used to. Regardless, I found it all hilarious because it was dry, satirical humor that really got me.
The animation was done kind messily, just like the first two seasons, so there’s no obvious difference in quality. The sound was fun-- the background music was very fitting and the voice actors did an amazing job and actually sounded serious most of the time despite the stupidity of what was going down.
The characters were just as random as ever, but they retained their most important characteristics, and that was enough to keep it engaging and interesting.
All in all, these four episodes were great, just like the episodes of the actual anime!
I would recommend this if you: liked the first few seasons of Senyuu, like Teekyuu, like cross anime references
I would NOT recommend this if you: didn’t like the first few seasons of Senyuu, don’t like short parody format, like plotlines, like things that make sense