Hmm... admittedly I fit a particular musical profile. On one hand I complain about repetitiveness and on the other I want well established conventional musical elements. What can I say? I recognize and appreciate the efforts that drive non-conventional musical forms. Do I like it, I mean really like it? Not so much. But life is short and perhaps to my detriment I have a very narrow focus - actually always have.
On the other hand randomizers are probably my favorite modules and the ones I spend the most time on. Random sounds while playing intentional notes...oh yeah! Random notes...not so much.
The NerdSeq can do 64 steps per pattern and supports pattern chaining, I believe.
Pyramid makes a couple of capable sequencers - Hermod (Eurorack module) and Pyramid (standalone). Pyramid can do up to 384 bars a track.
Pretty much what I suspected. Not only does it take the right sequencers; it's a lot of work to craft those sequences with transitions found in conventional music. At which point you may be better off playing those notes. Sequencers or arpeggiators that you can transpose on the fly are fun. But when you're limited to certain modalities...well I really don't want the sequencer dictating what the underlying music has to be.
Face it Jerry, I'm hopeless.