Currently, not really. I have intended to overhaul progression by the use of the twilight bosses in the over world, but I still haven't got around to it.
Why not have a separate quest line that takes place in the Twilight Forest? I mean, most of the other major magic mods have an entire quest line to themselves, and I think this would be a cool one as well.
Something like "This mysterious land has long been far out of reach of known magics. Perhaps I'll find something to combat the taint here?"
The quest line could be something like:
- Enter the Twilight Forest. "A safer place?"
- Pick up a few resources that can only be found there, e.g. fire flies/fire fly jars, and twilight forest wood. Also some livingroots and moss. "It's time to examine some of the strange items in this land.
- Kill some zombie dogs. "These strange creatures have an unnatural aura animating them. They are fast and strong and command a variety of powerful abilities. One thing is for sure, there's no way to tame them... go ahead and kill any of them you see."
- Bring a pair of wild deer or whatever they're called to the overworld. (If that can't be checked with HQM just make them kill one of them in the overworld?) You can do this with leashes (I think). (This quest should branch off, not part of the main line.)
- Find a pointy tower and discover a clue about it. (You can check for that book that killing the kobold near the tower gives you.)
Sound like a good start?