Figured that might be an issue. Oh well, hopefully it's possible in the future!

Was not aware of that trick. That is awesome, thanks a lot.
Still though, having it be on the belt itself would mean no extra foot print. I don't know squat about modding or programming so I'm not sure how easy it would be.

So what I mean is you can have one side of the belt stop at one spot and allow the other side to continue unhindered. After the blocked spot the transport belt functions normally. See the attachment for an example. The pipes act as the supposed "valves" or whatever you want to call it. Looking in ...