I'm listening again, and I just do not find any of the bass offensive in any way. In fact, I would much prefer the bass be more pronounced...than anemic.
All true. And the anemic bass on those original Spector mixes is striking and terrible for that!
Try this though:
Turn the bass range down in the fronts 10db with a low shelf that goes up to 170Hz.
Now turn the whole thing up (monitor volume) so the bass is back where it was. You'll hear the awesome bass is still there and still awesome but NOW you'll hear the midrange components of all this 1970's era goodness that was intended to be there back in the mix. And the high end comes into perspective too. That 'flat' sound is the entire program down to 170Hz being 10db behind the bumpin' kick and bass. Oh, and turn down the center 2db. Now the 4 corners come back.
Even with flaws, just about anything could sound better than the original for this one! It's worth your time to not settle for this one as it is out of the box though.
Could this be an example of that phenomenon where you find yourself emphasizing the elements that were buried in the original maybe a little too much when you do a remix? This is a thing.
My guess is still that is went to the wrong mastering guy. I'd wager a guess that the first version he turned in also has the stereotypical harsh high end blast. Someone actually listened to it and complained and made him turn that off but the bass hype still got through. That's my ass talking there but that's going to be my guess. And we got really lucky for that! (No harsh high end boost I mean.)
Sleeper of an album for sure as mentioned. The sum of the parts and all that...
There are still moments and the man sounded good when he played. He really got done dirty by the original production.