Anyone can teleport to highsteppe, cookie, or whatever and use a runemage reagent to go anywhere from the pillar (or any pillar).
My best guess is that teleports were reduced in order to make teleportation easier such that multiple similar ritual steps wouldn’t clash, but that’s speculation. If so, the problem of being unable to cast is already addressed with the “pillar teleport menu” that anyone can use. Either way, I feel that this takes out something that was fun for many runemages to learn/memorize. There are so many spell icons to pick from too.