Hi Gamin Developer!
I had some whises for Garmin Connect Web.
1.) Goal - Daily Active Calories (manual adjustment) - same as steps
2.) Reports - Progress Summary - Highest Altitude
Maybe you can add to Garmin Connect Web :-)
Try sending it rather through this form: https://www.garmin.com/en-US/forms/ideas/
Here on the community forum, it risks not to be seen by anyone from Garmin