This is a reach.
Banjo and Kazooie are Rare/Microsoft owned characters. and everybody knows that. As such, we could have gotten 2 tracks, no spirits, no interesting alt colors, nothing - much like Cloud. Banjo and Kazooie are properties of a main competitor, and deep down in my soul I feared we'd get the Cloud treatment. Even when Cloud isn't property of Sony or Microsoft to begin with!
But we got some really good palette options, 10 stellar tracks, 7 of which are remixes, more than any other DLC character and most other newcomers from SSB4/Ult! Exclusive new renders for the spirit board, a really good and detailed stage, as well as a perfectly fun and true-to-character moveset.
Yes, we could've gotten more. But I appreciate the content we have now in every aspect. Especially music-wise:
BK has 10 tracks, 7 remixes/3 original
DQ has 8 tracks, all original
Persona has 11 tracks, 3 remixes/8 original
Bayonetta has 11 tracks, 2 remixes/9 original
FF has 2 tracks, all original
Namco/Pacman has 11 tracks, 6 remixes/5 original
Metal Gear has 11 tracks, 5 remixes/6 original
Xenoblade has 11 tracks, 1 remix/10 original
See? Banjo and Kazooie fall in line with most other newcomers and DLC characters. The only exceptions are Splatoon, Street Fighter and Castlevania, which were base roster characters to begin with. Banjo got way more remixes, which implies more dedicated work from the team. I know they said it was because of the country feel of the original OST but heck they could've slapped some Nuts and Bolts tracks and call it a day.- if they were that "forced" to include B-K.
tl;dr stop reaching. we got amazing content and the most love the character has gotten in almost 20 years.