This is why the tower is the superior option. It's not a tool for travelling, it's a mobile headquarters that we bring with us when we start a new arc. We invested resources in the Underground Palace into a wizard workshop, we invested resources into K8P to make a wizard workshop, and we invested resources into the waystone project to make yet another a wizard workshop.
If we go to Lustria or Nehekara or Kislev or Reikland or anywhere, we're probably going to need a workshop nearby. Why not just bring one with us?
This has been my position from the start but it has two problems
1. sky pirates!
2. The Prismatic Wanderer is an incredible name