I was excited to ship all my paperwork around using tubes but it is very painful. Key issues:
- Tube capacity is shared across forms. This means that a tube carrying two types of forms requires circuit conditions on all inputs to make sure they do not over-fill with one type of form and leave no room for the other, lest it jam. I recommend capacity be per-form type to prevent this. (can hold 10 of each form).
- Tube input contains circuit condition panel, which doesn't do anything.
- Form tube input and output are hard to tell apart visually.
- Tube input contains an inserter, but cannot be rotated.
- Setting output filter on form output is tedious, and if you connect it to a network that already has forms before setting the filter, it will fill up with the wrong form immediately.
- Work orders are distinguished from permits by the little gear icon, but that gear is in the same space as signal and stack numbers.
- 60 tile length limit, limits form tubes to small subfactories. Must use input/output/inserter chain to move forms between tubes. This is okay, but a bigger limit would be nice.

Overall, I was hoping the pneumatic form tube would work as a linked 'mega chest' where you could put items in from anywhere, and get them out from anywhere but only for forms.

Currently, I am not really sure how to use them correctly.

accidental repost

Hi ! The tubing system uses a common pool as capacity because otherwise immediately after being unlocked it would already be its end form, because you will never really need it to be a buffer of form, so having the ability to just dump form without risks of clogging feels a bit too OP to me, so yeah it requires circuit conditions to operate properly.

I removed the logistics panel that was useless indeed.

I'm a very bad designer, I will try to come up with something but for now this is what I got.

For the form output filtering, unfortunately this is heavily contained by factorio engine and I didn't find a. way of making this easier for now.

Increased the maximum reach for tube, now 120 tiles. This is capped for performance reasons BTW.