I really hope the sound engineers don't screw up the sound mixing like they did in 2018.
I really wish they put more effort into the camera shots and band sound quality like in 2016, 2015, and 2013. The mixing in 2017 was awful and it hurts listening to the concert in its entirety.
They have a habit of putting too much reverb into the bass and making the drums more 'treble-like' instead of bassy.
And it always seems to happen on Hall 1 of Makuhari Messe. 2019 nearly had the same disaster as 2017 but the sound engineers did a great job trying to make the band sound great, at the cost of the vocals becoming too sharp.
This is one of the reasons I prefer the live stream over the bluray.
And speaking of the sound mixing in 2018, the livestream audio was screwed because the right channel is muted, resulting in Angelo Teramae being inaudible for the entire concert and certain songs sounding like instrumentals (The entirety of No Logic, Luka's parts in Akatsuki Arrival, and some parts of Shake It). The bluray audio sounded like a slightly remastered version of the livestream audio, with the vocals fixed and Angelo's parts being heard.