I agree that some simple presets for [Daily] and [Trip] would be much more intuitive that a full-analog sliding scale.
I'd further suggest that if the [Daily] could be fine-tuned by the car's intelligent analysis of your daily driving behavior. I suspect that the "optimal charge" for a person that commutes 20 miles per day is different than that of a person that commutes 130 miles a day.
I know you do get prompted to disable trip charging capacity at some point. Is this currently based off location intelligence or simply a dumb timer? If currently not location-based, I'd suggest the trigger to prompt the driver to turn off trip charging should be based off 2 or more consecutive days at same GPS location.
Due to the discussions on battery degeneration, the slider makes it a little hard to always select the exact spot on the slider in which to select 80% or whatever. There are specific spots for 'Daily', 'Trips', but not 80% or 90%
If I select 90% today and the traction battery charges shows I am averaging 215 range, according to the console. Then, the next day I have to do a 100% charge, for a trip. It is hard to be sure I am using the same charge points, when I try to re-select my previous 90%.
Its kind of like, guess work?