Sorry if this was suggested already - I searched the Feature Suggestions section and couldn’t find it, but it was posted under the pinned page for Feature Suggestions (so not a topic to vote on).
Just a charging/not charging icon on the main Home UI isn’t great - please display a percentage so I know how charged it is (or how much it is losing charge when using a slightly inadequate USB-C PD powerbank). Should include low power warning notifications etc.