I prefer the way the soundtrack sounded in the original Ruby/Sapphire, which is my second favorite installment after Gold/Silver because I friggin' love Hoenn (even with all the water), so more from this part is fine.
So, care to explain how this affects whatever theory it was that was supposedly disproved today?
The main bulk of the Music Theory is that they are saving music tracks for franchises with new fighters until after a fighter gets revealed for that franchise.
The main bulk of this comes from the August Direct, where they clearly saved King K. Rool's music track until after his reveal, but then the next track revealed after that was also an FE track, when Chrom got revealed prior. (Dark Samus got revealed in this same Direct and Metroid had music since E3, but Ridley was also revealed at E3, too.)
Its hard to say what it means in regards to Echo Fighters, just throwing this out there.
The other factor is that every track seems to be for a new franchise with a new composer. There is one exception to the latter, and that's the main theme (the composer of the main theme also has a separate track listed). In terms of franchises, if you count the number of franchises left and weeks until release, taking into account those that won't have any (likely Duck Hunt, Ice Climber, and Final Fantasy at least), there's roughly enough for every franchise to get one, along with a few additional IP's.
What really made the Music Theory especially notable was the Animal Crossing music track, which I recall seeing many people saying around then that it "proved" the Music Theory. The AC track has nothing to do with Isabelle, and nobody would've batted an eye if they revealed that instead of Pikmin. But they still pushed that music back when the Direct got delayed. That, I feel, is very notable.
Listed some examples of the "Music Theory":
- The Animal Crossing music was delayed a week to be revealed after the Isabelle trailer and wasn't shown until after she was.
- The Metroid piece dropped after E3, so echoes don't seem to be factored into this.
- The DK piece dropped after K. Rool's trailer.
- The other songs revealed are from series that have been typically speculated to not be getting newcomers (Mario, Pikmin, Yoshi, Fire Emblem, Mega Man, F-Zero)
- Kirby is in an odd spot- many suspect Bandana Dee, but there was a Kirby piece. This could either disprove the theory should he get revealed or be a sign that we're not getting Bandana Dee.
Fire Emblem got Chrom as an Echo, and FE music was next in line after Castlevania and DK. The Metroid music was revealed after Ridley's reveal, notably.
I personally would find it very strange if they revealed Incineroar and didn't add music to the website afterwards for Pokemon Sun/Moon.