exact level depends on your crafts and stage you can reach,so I don't know
Estelle in my clinic works so hard from old version,I think zero is a good level for her in this version,she deserves a rest
although mojo runic wallpaper still give her some levels
she still can give benefits stop in right level,but if you can go through more maybe 200 or 300 stages,incoming in one stage will provide much more then which she can provide in whole run
bad english ,sorry
anyway,I think they will reset everything again in a short time