MG,
On the contrary, I see Jackie's name anywhere on a BN record, whether as a sideman or his own, generates a level of excitement, meaning that he's there, get the record. Hard to explain I guess, but ordinary records by other leaders with Jackie Mac lifted to good, great, sometimes extraordinary records, if that makes sense.
He carries that aura about him that gets things exciting anywhere in the BN era, for me at least,
On the other hand, yes, he can dominate a leader date that's not his own and make it his date, and I don't think that's what his intentions were, for example Jack Wilson's Easterly Winds, in effect was a JMac record ( my opinion, of course).
Addendum: Those "ordinary" records are usually pretty sharp anyways, I buy them because I like them with or without JMac, so I didn't mean to imply that they're shabby because JMac isn't there; however, Jackie sometimes makes those records even appear more exciting just by seeing his name on the jacket; he always brought something to the table that made things more intense, uneasy, unpredictable: Leeway for example, a good record, but Jackie made it a must have Lee date for me, not because of Lee (who I adore) but the edginess that Jackie delivers; or even in organ combos, like Open House/Plain Talk (which which turned me on to J Smith) can exemplify his dominance on a situation. Free, straight ahead, in between all that, he was the go-to guy.