just testing a few things in 2023.
Smart Fasteners are on RMB assembly menu.
You can access any fasteners in the ReUse Library.
In the pick below I made Library part of a block with variable size and holes then inserted from Library into an Assy.
Then inserted a Smart Fastener Stack on the one fully aligned hole, edited the length(in the dialogue) then Assy Array Point to Point.
Accepts different planes for location which is nice.
I still do not know if it is creating files for each part or streaming them live ex the Library.
Cheers - Paul