So your Ikeda has an effective mass of ~33 grams? If so, it seems you have a very anomalous example of a UNIverse. Everything you heard is what we'd expect from a low compliance cartridge, as you probably know better than I do!
I am still dealing w. some more little things, like ideal VTF which I find 2.25 to sound better than 2.00.
That could be a function of an stiff suspension, no? Your compliance seems so far outside of norms that the usual guidelines may not apply.
OTOH, differing sonic preferences also play a role here. Extra VTF gives greater macrodynamics, bass and heft, but at a cost in detail, harmonics, tonality, imaging and soundstaging. One other listener I know who prefers 2.2-2.3g has a system that smothers fine details but is very good at big dynamics and fullness. HIgher VTF's exploit the strengths of that system and the losses can't easily be heard. Definitely a YMMV situation...
You need to truly know your cartridge compliance. As many cartridges vary compliance in production even with the same model this will be more difficult to do unless you purchase your tonearm after testing your cartridge.
There's a chicken/egg dilemma! How does one test a cartridge without a tonearm? ;-)