Hello Aternos Team 
i have a modpack for you that is sadly not already there it is called "Simply Magic" and its from the FTB Launcher in the Third Party section.
here is a link for this modpack: https://forum.feed-the-beast.c…t-tutorial-themed.139841/
what i like about this modpack is that they added botania,Bloodmagic,Thaumcraft (with those addons + botania addon),Witchery and
one of my Favorite mods of all time Ars Magica 2. 
However there is a Quest system that is realy challenging.
if this modpack is included i would be pleased and i am thanking you if you add this.
and me and my friend are going to play it.
your kind guest,
Timtamba 