correction for information purposes - the brassiliser is still in the production versions, called brass simulator 1, 2 and 3, for what it is worth.

I can't agree on the bass, Bill. If you try it side by side with 6500 on anything with real bass, the 7k is, if anything deeper, but clearer with less boom. The only way to test it in domestic circumstances is to physically swap the positions of the 2 keyboards, maybe eigentones of the room etc will affect the subjective result depending on position, a known effect of bass reflex systems?
The big improvement in the acoustic piano was from 6000 to 6500. In the 7k resampling , or the sound system gives it a greater impact and resonance.
The chord recognition has not changed from the 65 as far as I can see, but one finger has been replaced with basic, like on the pianos, which combines both one finger and fingered chords. All these examples come out as you say in pianist mode but not in fingered mode. Of the ones that are recognised in fingered mode, E A D comes out as Asus4, B F A as Fb5, E A Bb D as BbM7b5, E Bb D as Bbb5, Bb D E A as BbM7b5, Bb E G as Emb5, at least as far as the display is concerned.