There are surely components that "do" bass better than others, noise floor, or any other parameter you can dream of and you can certainly "optimize" around those parameters if you choose (note the quotes around optimize).
Let's use the Zeppelin example. Might there be two or more different attributes that two different individuals consider to be the essence of Zep - say for example one person considers John Paul Jones' bass playing to be the key while another might argue for Robert Plant's vocals or Jimmy Page's guitar? They might prefer two different turntables based on this strategy. How would I recommend a Zep optimized system to someone?
I think the safest path (even if you're limiting your musical genres) is to still audition a wide variety of music, including music you don't (think) you like. Linn had a lot of propaganda back in the 80's that was just that, but one of their recommendations that I subscribe to is the above auditioning strategy.
Let's put it this way. Have you ever been to a live performance where you heard a group, and only then did you consider buying recordings of their music? What's that about, and why can't this be the case with your home system (that it introduces you to new music and new genres)?
I have a thought exercise I'd like you to run in the background as you select music to play. How many times have you selected a recording (we're talking physical media), pulled it out of the shelf, and then pushed it back in?
What's that about?
Surely there are times when you're plainly not in the mood, and you pulled the recording out only because it caught your attention when you were browsing.
I would argue that for many systems, in a large percentage of the time, pushing the recording back in the shelf is because you triggered a memory of the recording not sounding that good.
What percentage of your recordings don't "sound that good"?
Clearly, we all have clunkers in our collection, but I contend that we're unintentionally shutting down our musical appreciation by many of our equipment choices.
Cheers,
Thom @ Galibier