Actually, Valravens replacing Tower is likely not the only thing that get fixed.
Now, Haunted Tower will got the same level as other Towers in its level. As yesterday, you, me, and other players that spent all their sigils, also accidentally got an easier battles than other players who played today. So, we did got other kinds of advantages.
I’m not sure what they can do more right now, as the problem are quite complex and involve many random parts to consider giving proper compensation.