Ideas around this have been shared already, but I think, if we want to try and put Wild Shape and these other features on the same level, Healing Blossoms should provide whatever healing you roll equally to all creatures within radius—you're healing 10HP? Now everyone in range gets 10HP. It is a significant boost to the feature, but perhaps a significant boost is needed for it to be worth your action. (Although it still most likely will get used to up fallen allies rather than provide a significant amount of healing.)
I would personally love if Wild Companion took a note from the Wildfire Druid and provided a summonable, scalable companion... Weaker than Wildfire, so that subclass could be an example of "Directly improving and building on X feature," still more focused on utility and scouting (like what it currently provides by casting Find Familiar), but striking the middle ground in toughness and options between the two.