Is there anyway to tag what type of instrument and the number of players a specific work is for? It would seem odd if there isn’t.
Not yet, because we’re waiting on being able to do this for instruments and vocals (right now we could easily say a work for soprano and piano is for piano, because instruments can be used in relationships, but we couldn’t specify the vocal part)
STYLE-470 is the ticket 
No, that’s (for now) specifically to be able to say the ensemble type “String quartet” has 2 violins. Although once we have instrumentation, that’d also allow us to enter “number of players a specific work is for”, yes
Of course. I am better at hesitating with votes.