When it comes to Smash, the one thing I always anticipate the most besides the characters is the music selection.
With so many Nintendo characters, both iconic and niche, as well as third party characters, Smash is pretty much the definitive celebration of gaming, and the music selection is what brings some of the best tunes into one game.
Here are some tracks that I would love to hear in Smash:
Nintendo Switch Presentation 2017 Trailer - The Legend of Zelda: Breath of the Wild
I was disappointed that this theme didn't appear at all in the final game, and while I don't expect this exact version to be in Smash, a rendition or remix of some kind of the second half of this beautiful theme would be an absolute dream.
Diggernaut - Metroid: Samus Returns
Metroid: Samus Returns was a real treat, especially considering it was the first 2D Metroid game in an extremely long time (sure it's technically a remake of Return of Samus, but considering how much they changed and added, it might as well be a new game). The boss fight with the giant Diggernaut was easily one of the highlights of that game, and the frantic nature of this theme would be great in 1v1 matches.
Surprise Attack (Star Wolf Theme) - Star Fox 2
Wolf is back, and with the release of the SNES Classic making the official release of Star Fox 2, it would be a golden opportunity to remix this theme into Smash.
Zanza - Xenoblade Chronicles
Normally, I wouldn't be certain of this theme because of spoilers, but considering Fiora is now in Shulk's final smash, they might as well go all out.
Spicy Calamari Inkantation - Splatoon 2
Considering how beloved the Squid Sisters are, I think the original version is a safe bet for Smash, but the Splatoon 2 version is 100 times better, and it would be a shame if it doesn't get some love along with the original.
Fist Bump - Sonic Forces
Yes, I unironically love this song, sue me.
Fuse Man - Mega Man 11
This is just a recreation as we don't have the full theme, but this theme is basically associated with the debut of Mega Man 11, the return of the classic blue bomber after 8 years, so that alone gives this the theme strong criteria to be in Smash.
Ryu's Theme - Street Fighter V
Not too crazy about SFV myself, but this is easily the best rendition of Ryu's theme, even beats out the remix in Smash 4 in my opinion.
J-E-N-O-V-A - Final Fantasy VII
The soundtrack of FFVII is one thing I adore, even if I'm not a huge fan of the game itself (I still need to beat it one day, lol) and the fact there were only two tracks in Smash 4 was pretty disappointing. Hopefully Square Enix isn't being stingy this time around, and allows more iconic FF themes into Smash.
Last Surprise - Persona 5
PLEASE PUT JOKER IN SMASH, SAKURAI!
Those are my personal choices, but what about you?