Rimrock,
I agree with your comments about the upgrade to this type pump and valve blocks. I recently board a pump 1000ml mini pump with tank from this fellow,which is the main supplier for Premacon.
https://www.modellhydraulik.com/. The pumps are industrial grade not toy grade pumps. SMC M-Series has this type fitting which Premacon uses as well.
https://content2.smcetech.com/pdf/M.pdf