I found on an italian site an interview with Mike. Relatively standard, nothing mindblowing:
https://www.metal.it/interview.aspx/1317/flying-colors-spotify-ha-ucciso-l-industria-musicale-mike-portnoy-drums/Some bits here and there:
- He recounts what we all already know, how his different bands differ from each other and what's the dominant style of them
- Third Degree was written in two sessions, one in December 2016 at Steve Morse's house, when they wrote 7 songs, and then in December 2018 at Mike's when they wrote the other 3 songs
- Casey was the singer they wanted, to have a more mainstream / pop feel, because "he comes from the world of Radiohead, Muse, Coldplay and U2". He makes the distinction of the band - Casey the more mainstream voice, him and Neal Morse the prog guys, and the other two the ones oriented on the instrumental music. They wanted all of this to mix, but with the focus on an "easy listening" vibe (which the debut clearly accomplished IMO).
- About drummers that impressed him: talking about modern ones, he mentions Zoltan Chaney, who is very fun to watch live, while if he thinks of the more technical side, he can't answer 'cause YouTube is full of great drummers.
- Artists collaborations, and if there's anything he hasn't done yet: he mentioned he was lucky to have worked with almost all his idols, citing Billy Sheehan, Ritchie Kotzen, Steve Morse, Alex Skolnick and Dave Ellefson, while one he'd like to work with, surprise surprise (not really), is Mikael Åkerfeldt. He also mentions the "legends" for whom he would quit everything to go running to them: Paul McCartney, Jimmy Page, Pete Townshend or Roger Waters.
He concludes saying that it's a nice time to be a musician, if you look at it from the creative side, but it sucks financially because Spotify killed the industry and people expect music for free, thus depriving young bands of a chance to make it big and earn something from their music.