But I've checked. CC generates pylons, ores, and a lot of the plants in Twilight Forest natively without me having to change anything. All of those are already included in the generation. o.o Even the blue flowers (I forget names) spawn natively in twilight forest as do all the ores I've seen so far and so do all the crystals. So if there's crystals, ores, flowers, and pylons, am I missing something? And I know CC has integration with CC so that the pages you can find in chests from the loot-tables natively and right out of the box. I've also tested and double-checked that. Am I missing something? It seems like everything they'd need to start and progress in CC is already readily available to them in Twilight Forest, at least beginning-mid tier anyway. Mid-endgame I'll be granting them access to those other dimensions, anyhow.
Maybe. If I were you, I'd just cheat and require them to obtain carmenite to go to the overworld (which can only be gotten near the top of ghast towers as a drop if I recall).?