My feeling: just like fast and slow-twitch muscles, people have fast-twitch and slow-twitch neurons
I'm definitely slow-twitch. I don't like surprises. I like nice stable lines in corners. For me, I want trail. 74 degree head tube? No thanks. My Fuji SL/1 has a 71, and I really like the way that corners. Concously counter-steer it into a line, get my COM low, keep a light grip on the handlebars to avoid over-reacting to road bumps, relax, relax more, relax more, look where I want to go and not where I don't want to go, apex later in corners rather than sooner, and relax.
A key to relaxing is a strong core, so I'm supporting my body like a cantilever rather than with my arms. My arms are bend, relaxed, absorbing shocks rather than transmitting them. Relaxing starts with my jaw (smile), then my neck (hunch my shoulders and let my head drop), then my shoulders (my neck hangs from my shoulders, not sit on top of them), then my arms. Descending is like yoga on the bike.
It also helps if I wear contacts rather than my usual eye glasses, as my eyes water behind the glasses.
I still can't keep up with the best descenders, but all of this helps.
Okay, so that's more than geometry. But the long trail definitely makes me a better descender. Look series have long trail. I think the Madones do as well. Comparisons differ by size. So you'll want to research it yourself.