After finally listening to the album on Spotify, I'm sorry to say but I disagree. Don't get me wrong most of Transform's tracks were pretty good but they don't fit with the tone of the existing soundtracks with the possible exception of "Square Jaw Punch" and "Direct Navigation", in my humble opinion.
One recurring problem is that even though the tracks sound like RTS soundtrack, they sound like a late-00s RTS soundtrack like C&C3 or Universe At War, after the devs figured out how to make it so the music reacts to the events in-game and the composer now had to write music for the quiet moments and the action moments. As such some of the tracks are too slow and quiet and would feel out of place during moments of full on army clashes (which is why Westwood-era RTS soundtracks had to fit accommodate the slow and fast moments of gameplay and why they chose to diffuse the soundtrack to "slow" tracks and "fast" tracks when they finally had the means to swap between the two in-game as a reaction to the switch between the two types of moments). Examples include the Foehn suggestions "Shadow Spy" and "Future Hope", both of which would've made perfect sense for the slow moments of Foehn play if Mental Omega was a mod for C&C3 or Universe At War.
In addition the Epsilon tracks you've suggested would stick out like a sore thumb if placed in the middle of Black Ice 9's music, Both "Transform" and "Demon Clutch" are this rock/dubstep hybrid sound that feels more like demo tracks for the Goo faction soundtrack from Grey Goo before Frank switched to an orchestra/dubstep hybrid sound for the faction, than anything that would tonally fit with Black Ice 9's more "ethnic techno" sound. Epsilon is supposed to sound mysterious, conniving and subtle just like the faction, which is why their soundtrack so far is predominantly slow and/or quiet that builds up to this overwhelming crescendo, see "Chaotic Impulse" as an example, these two tracks are the complete opposite of what Epsilon should sound.
Same goes for the Soviet suggestions which feel a little too electronic and too upbeat to fit with the gritty, "lighter shade of black"-type villainy that the Soviets are supposed to represent, "Beyond the Assembly Line" is a perfect example of it as it just feels too high-tech and optimistic at points, like a more upbeat counterpart to "Magnafried". "Mech Driver" would actually fit better in the Allied soundtrack, and I can imagine "Fireball Shots" fitting with the Soviet soundtrack if the high-pitched synth melody on it was played on an electric guitar instead. In essence the ratio of synth/electronic sound and instrumental rock sound is all wrong for these tracks to fit with the Soviet soundtrack, either go all electronic but grimdark like "Fantasy" and "Banished" to establish a dark and villainous tone or mostly instrumental with grim electronic flourishes to establish an aggressive, badass, industrial-sounding tone to thematically fit with the Soviet war machine as the aggressor in the conflict, like "Rocktronic" or full instrumental rock like "Brain Dead".
Overall I am of the opinion that this album would be a better fit for the Novus or Hierarchy factions of a Universe At War mod than the current soundtracks for Mental Omega.
