Magic mods tend to be a chore.
-Blood Magic is a miserable experience to get through
-Astral Sorcery might not be terrible I just always got into other mods waiting to do anything in it
-I've probably only played through Thaumcraft so many times because it changes so much every iteration
-Botania is cozy but I hate sitting around waiting for flowers to jizz into my magical cum jar, and only play it when I have tons of black lotuses to cheat
-Witchcraft can be cool, bit it often feels like too much work for what you're accomplishing
-Whatever the Native American magic one is called, the song rituals fucking blow
There was once a tech mod that was as much a pain as your average magic mod, I forget what it was called, but it had a research system similar to Thaumcraft. The eventual goal was to make a space ship, a building not attached to the ground and use the warp drive to move your ship to a new dimension map to simulate space travel. Way cooler that Galacticraft, but a much bigger pain in the ass.