Xeviat
Hero
Companion druid: At least in 3E the problem was that the druid got everything: turn into a melee beast, cast spells and have companion. 5E decided to protect the "companion guy" niche for the ranger, and I'm not sure it's wise to reverse that. Any Companion druid build designer needs to ask himself: will there still be ANY reason to play a Ranger after this?
Well, off the top of my head, if one of the core parts of the subclass at 2nd level was gaining a "Summon Companion" spell, which summoned a single scaling animal based on spell slot used, it could instantly be balance-able against the Beast Conclave Ranger. It would even be different thematically: the ranger goes around with their best friend, while the Druid calls upon whatever animals are native for help.
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