The mage tower is not a player power progression system. It’s a transmog challenge where if good enough, can be done that day without needing to progress through anything over the course of a tier.
Big difference between something like m+ where you can spend hours every single day throughout a whole tier running and still always have something to work towards within it.
Nobody logs on every single day throughout a tier to spam mage tower. Solo players want a tier long progression system where you have a meaningful reason to log in every day, that isn’t just doing world quest chores