I like worldbuilding too and I’ve probably got a lot more than 50 pages of background on my world (it’s spread over a wiki so I don’t know how many pages it actually comes to). But is that really what you actually give to players at the start? I feel like not many players would have the patience to work through 50 pages of homework before they’re allowed to start playing (but congratulations if you’ve found a group who are that into your worldbuilding!)
A lot of my worldbuilding exists either for long-term campaign options, for peppering into dialogue or events to make the world feel a bit more three-dimensional, or realistically just for my own private fun that will never see the light of day.
Could they play a Hexblade warlock?