As you know, I have the Raven 2002's with CMRC crossover upgrade, so my tweeter is slightly different then yours. I drive them with a Pass X-250 amp as you do.
I am using the Shunyata Lyra spkr cable & Aries intercons, having replaced Analysis Plus Oval 9's and Copper Oval's. The Shunyatas & AP's seem to have similar basic sound characteristics to my ears - very neutral in general. But the Lyras provide noticeably greater speed, articulation, treble energy and details then the AP's, while maintaining mid-bass depth and smoothness. There is NO distinct brightness or edginess. Bass response and extension were quite good with both, as you have noted, though the Shunyatas exhibit tighter & more focused bass - of a more 'sophisticated' level, though a word like 'polite' is not really applicable. Keep in mind that I traded the AP's on the Lyras, so I didn't have enough time with both in the system to do complete comparisons before having to ship the AP's to the dealer.
I DO know that Grant from Shunyata has mentioned that their intercons, etc. do NOT respond well to cable cookers, due to the true litz design. The design also contributes to a pretty lengthy break-in period, so do not judge them too quickly. My Lyras went through some pretty wild mood swings before settling down.
I know that you have already auditioned the Lyras, but that was with a different setup, so you may want to try them again. Could I do it all over again, I would consider trying one of the higher versions of the Shunyata Constellation series cables - the Phoenix or Andromeda, as they are progressively thicker gauge and should have a bit warmer mid-bass. The Ravens could use a little of that.
I have also heard that the AZ Holograms & Satoris are quite good with Talons.