I allowed access to the twilight forest before I was even ready, and it honestly shouldn't have been in the pack until I molded it into the progression system how I wanted. However it is too late for that, so until then I can discourage "living" there. It already offers an entire dimension without taint and has animals for now. However next update will not be so kind
The Aether was removed because it caused health bonus's to duplicate when you changed dimensions as well as breaking the sojourners sash and globe trotters sash from Botania.
I found a TF portal right near my spawn, but the constant zombie wolf spawns discouraged me from making a base there. Taint honestly isn't that big a deal in comparison.
On a different topic, might I suggest you change the Infernal Mobs and Special Mobs configs? Hungry Spiders are AWFUL when they eat their own shed string. They keep doing it, gaining strength and max hp from it, plus they never despawn and they have passive regen which can stack with Infernal regen... every time they hit you they steal an item, which can be your armor or weapon! Infernal Mobs on its own is heinous with default configs. Bonuses that give extra attacks such as Ghastly, Alchemist, and Storm will trigger even if the mob isn't hostile. For instance, on pigmen. Nobody likes Sticky or the Special Mobs that steal items (Hungry Spiders AGAIN, along with Thief skeletons), Vengeance/Ender/Ninja can result in you just killing yourself, and Regen on an especially durable mob can result in a nigh-unkillable monster. I think Vampire bugs out the Wither and allows it to gain infinite hp.
I noticed that mobgriefing is off. Ghastly bypasses it. I think some of the specialmobs creepers bypass it, too.