A wide and deep soundstage is important. You can have too much of a good thing if you get a wide deep soundstage at the expense of placement/timbre accuracy in the soundstage. On a good recording on a good system the instruments should have weight and presence and be placed accurately in 3 dimensions. If the instruments are blurred or seem to have a “haze” around them then you might want to start tweaking. Most, if not all, live music I have heard were not set up with soundstage in mind at all. Cheers - Dan