If possible, add a Generator page to each parameter where users can dial in a percentage of randomness before committing, or in real time.
Or, a Generator page in the menu settings with options to include/exclude certain parameters. Or offer a selection of generator "presets" that contain a collection of selected parameters that create interesting musical changes similar to Polyend Play's randomizer.
Or "nudge current patch" that makes subtle changes to existing parameter settings similar to Hydrasynth's randomizer.
Just spitballing.
What is it you want to achieve by these options? Is it to achieve subtle variations on a sequence you like or to get a brand new sequence idea?
I'm not saying your suggestions aren't possible or good ideas but understanding the problem you want to solve is key to creating something that solves the problem and fits ARP's design philosophy.