It would be great if STOR could pass particles to VOID and PRTI in the same manner that it passes to PIPE. This would basically mean you could create a filter for particles of a particular type that touch it. I know you can try to use STOR --> PIPE --> PRTI/VOID, but PIPE can only be used in low-pressure environments. This wouldn't break any saves because there is currently no reason to put PRTI or VOID next to STOR.
The problem with this is that it doesn't indicate which direction the STOR should release the particle in. Essentially, it does a really bad job filtering, if at all.