this sounds like a horrible idea for me because i love spamming large aoe moves. but hey would be funny

You don’t even need the hallow, empress doesn’t enrage outside of it

i have a custom world that has hallow in prehm

I'd been thinking of adding some config options for a few extra things (e.g. letting the lacewing spawn all night instead of before midnight), but uh, the Hallow doesn't normally exist pre-hm.
But it's *possible* to add, sure.

add a config option that lets them spawn pre hardmode