I would like to have the 'pipe-to-ground' entities work the same way as the as the underground belts.
I released a mod where different pipe type won't be able to connect, but haven't found a way to bypass this yet.
Was hoping this was something you could consider if you're gonna rework the fluid system, a while were on that note, it's abit silly that underground pipes count as 2 no matter the length

Picture for clarity: