[kohtatsu]

Depends on the data.

DDG:

  { used_advanced_search }
  { used_country_toggle }
  { tabbed, *tab_maps }
  { filtered, *filter_date }
  { os "iOS", *ver "13.5", browser "Safari" }

iOS:

  Mail
  { disabled_remote_images }
  { flagged_mail }
  
  Keyboard
  { emoji_keyboard_via_globe }
  { *emoji_use "100-1000", *emojis [ ":)" ":P" ":(" ] }

Each of these could be stored separately without metadata then aggregated no problem. Things marked * could be left out, and some things could be randomized up or down buckets and such.