The second iteration of 2v8 is now LIVE - find out more information here: https://forums.bhvr.com/dead-by-daylight/kb/articles/480-2v8-developer-update

Hollowed shell, sealed envelope, wreath and sachet offerings should increase point generation.

These offerings in addition to their post game bloodpoint rewards should effect point generation in their respect categories while in game. For a good share of point categories it can be very difficult to max them out to get the full value of an offering. Example: Each wreath and sachet offering increases postgame bloodpoints by 50/75/100% depending on rarity tier and category. In game the point generation should also increase by 50/75/100% respectively. Therefor greatly increasing the chances of maxing out said point category allowing you to get the full value of your offering.