History objects for HR, steps etc

Would like to play around with p.e. heartrate of the last 1 h.

It would be great to have Tags for History of certain stats
E.g.

  1. Daily step count for past 6 days #ZSCA# to #ZSCF#
  2. Average Heart rate for past 6 hours #ZHRA# to #ZHRF#
  3. Average altitude for past 6 hours #ALTA# to #ALTF#

This would allow watch faces to have charts.
Even better would be a new style of Progress bar to display as BAR/LINE graph the history of Steps, Heart rate, Altitude…

What other tags do you think would be good to have available history in Facer?