So we know that there is pressure drop inside of jets. That means that there is high velocity and probably are turbulences too. So why not use the jets aditionally to the cups/blind holes?
This is an example of how one could do a jetblock with jets and cups from one material, it has nothing to do with pin-fin blocks, so its OffTopic, but it has to do with Stormlike Blindhole blocks. It is an attempt to remove any restrictivity (and going with that thin boundary layer) on surface which is not the dissipation area. I would call that pressure drop efficiency. This is not a block design, only an illustration, it is nearly impossible to machine (needs 5-axis cnc for the wholes to drill) and there are still problems to solve with the restrictivity of the in and outlet channels to the V-jetholes but just look and try to understand what i mean:
