I view Classic Era as Blizzard’s fresh start. It’s a version of Azeroth explicitly designed to not cross into any of retail’s expansions, yet still very capable of having its own developments. Much like seasonal play, HC simply isn’t what I’m looking for in an MMORPG. If more realms are made for it, sure, fine. It won’t be affecting my enjoyment of the game (provided their code doesn’t bleed into our version of the game like it did with SoM).
That said, it’s my belief that the Classic Team has been ignoring Classic Era’s community for the most part. They’ve now put out 2 expansions and a season but rarely ever mentions our realms or the topics covered by those who play on them. The Community Council just recently made a thread (Classic Plus / Classic+ - The Best Risk Blizzard Could Ever Take) that centers around a topic I’ve heard countless Classic Era players talk about and I feel is worth further discussion. The hypothetical “Phase 7” is how I would envision Classic+ manifesting.