The summoning mat system as it is primarily benefits botters and dupers selling mats to a massive degree.
The second favored group is 4 players sharing mats.
Everyone else is just getting screwed, which is an odd system to keep in place given it’s probably the majority of the playerbase getting screwed by the system as it is.
Oh, and they just announced a new system is coming to benefit people who have extra or unused uber uniques, meaning the groups benefitting the most already are going to benefit even more greatly with whatever upcoming change they’re making.