Toons back and forth
Aberration only dinos back and forth
Items back and forth
(Main change being items INTO Aberration)
I feel like this would lighten the restrictions that players are feeling. Sure, we could transfer over our characters, fight the bosses, come back to Ab and THEN make the tek stuffs, but why not cut out one extra step and allow item transfers INTO Ab.
Another example, the other day I found a MC Flamethrower BP. Completely useless on Ab, since I can't bring it back into Ab after crafting on Rag. Just seems a little silly.