I suggest adding the Networks add-on for Slimefun. It is something built on top of cargo networks that adds additional storage capabilities and allows players to store large amounts of any sort of item. It uses blocks instead of player heads for the nodes and connectors so I believe this also helps with performance. I linked to Sefiraat’s documentation on Networks below. Boomer_1 also has a Networks video on his YouTube page.
Personally, I want Networks added to improve the Slimefun functionality of the server while not really adding any new tools or abilities. The Network Cells and Quantum Storage are great storage blocks that are more cargo friendly than Fluffy Barrels. The current rule/best practice for HelloMiners is to not have many storage containers, with the goal of reducing lag. Networks would ease this and allow players to have more organized and easily usable cargo networks.