I found a new way how to get fewer items on your bloodweb. You can use it for level up faster and get prestigue levels or teachable perks faster and save some bloodpoints.
Follow these steps:
1. Have 2 characters to level up.
2. In bloodweb, make you sure you have the last item, not entity.
3. After you get last item, quickly switch between character bloodwebs.
4. There are fewer items in bloodweb (not permanently, after you get next level, there will be normal items if you won't do the trick)
(as you can see the bloodweb is bugged, there should be 2 perks in this level but there is only one.)
Enjoy.
Edit: I found up it's actually only visual bug, it doesn't actually make you earn levels faster.