All this talk of the series' music makes me happy. I love RE music so, so much. Capcom in general is amazing when it comes to music in their games.*
*Someone's gonna post the farting trumpets.
Also, RE4 including half the P.N.03 soundtrack was a surprisingly good fit. Character-specific Mercenaries themes really have to come back.
What do you mean about the P.N.03 bit? What music from RE4 comes from it? I'm very curious.
Themes: I'd go one step further and say song selection needs to be implemented. Mercs 3D was a step in the right direction in regards to music variety. While we couldn't pick and choose, every stage past the tutorials had different music, both old and new. I thought this was great.
The thing that got me, though, was that my favorite new theme was used ONLY in the tutorials, and the tutorials were so short. It's a damn shame, but I remedied that by modding it into RE6 as my Mercs theme <3
Behold:
The Path for Fight. SO FUCKING GOOD!
Other new tracks I liked:
Ghost on the Blue. Muted tension. I just love how it sounds, especially near the end.
Subspecies It's so dramatic, especially towards the end. Such a great track.
Contamination. Sounds nothing like its namesake suggests and, in fact, sounds very upbeat/pleasant. It's still good for killing Illuminados with, though.
A Warrior Filled with Hope. You'll know once you hear it.
I'm not opposed to character themes, though, if it means more tracks.
Speaking of Mercs 3D, it is such a phenomenal game. If anyone ever wants to play, let me know!
RE6 Mercs > Mercs 3D > RE5 Mercs > RE4 Mercs for me in terms of "best"ness, but I still play the top 3, no problem.