Biggest gripe is I really feel like we should be able to set minimum payload size for orbital drops so that it doesn't send 1000 pods of 1 science over just sending 5 pods with 200 science or so. It's solveable by the player though. Have the platform in a state where it must not unload :) You can a...

Fill and empty speed should be the same as it's just one long belt and it seems to be capped at 30 items per second. Is that correct?

And shouldn't you fill the little 2x2 squares with some more undergrounds?

Yeah...I have that a lot of times...However, in factorio you just put up a lot of yellow chests and let everything be deconstructed to get a fresh start

For doing that you just have no wait condition on the parking stop. The train will go there and wait until a receiver gets activated. So the schedule would be "go to pickup until full, then go to dropoff until empty" and the interrupt would be "if not at parking station and destinatio...

An interrupt that triggers will not reserve a place in the destination in the first place since the train will never have departed to that station. An interrupt will never trigger while a train is holding a reservation to a destination where it is destined to go. To be fair, there is the condition t...

Active provider might have a higher priority than requester chest trash slots.

I do get a global warning "turret just ran out of ammo". However, when I don't react immediately, that warning disappears again. Is there a way to make the "turret ran out of ammo warning" permanent like the "train no path" warning or the "bots don't have materials...

The station is indeed disabled, maybe because there is no ammo request. Check the circuits on that station. As the station is disabled the train will not go there. However, there has been a change for 2.0. Trains no longer skip disabled stations. They treat disabled stations as if they have a train ...

Shutdown as in "automatically closing all applications in a controlled manner and prepare everything for switching off" or

crash to BIOS and restart?

To keep them on their planet without writing new customs-check-logic for barrels in the spaceport

the described behavior implies that the old reservation is not released before the train "re-arrives", so it never checks the new limit value. Actually that's exactly what happens if I recall one of the FFFs correctly. A departing train only clears its reservation once it has left the blo...

Don't see a problem here.
If you don't specify priorities then some random train will be called.

Solution:
Just set the priority of the train stop that shall release the train earlier to a higher value.

Possible solution:

Make anohter interrupt...
If...
...at refuel station
and
...no path
then...
go to depot

Set the depot to a higher priority so the train in the depot will be dispatched to the unloader before any train waiting at a loading station.

If you call them in with "OldFuel < x AND NewFuel < y" then they will only come to switch once the old fuel has been burnt mostly.
You can't burn all since you need to account for the traveltime from the last stop to the fuel station.

That can't be made easily.
The "next station" is only ever determined after the wait conditions are fulfilled so the information is not yet there while the train is waiting.

Interrupts are supposed to be used for that case.

What about removing it automatically?
Like when at the refuel stop that puts in solid fuel just remove every wood and coal fuel (use filters on inserters)?

If you configure the interrupt well you even get a fleetwide fuel update with every train coming in to switch fuel.

There have been changes in 2.0 concerning disabling train stops. Pre-2.0 trains would repath upon disabling a train stop that they were inbound to and potentially stop on track if no destination was reachable. Since 2.0 that has been "fixed" by keeping an inbound train headed to the statio...

I'd put the rail signal at the split (not the one on the main line) directly after the split. So only one train goes into the split and once it's in the mainline is free again. Similar thing for the merge. Keep the mainline signals at their proper distance Then put the rail signal right behind the t...

Afaik you need to have participated in at least 50% of the playtime to be eligible for achievements in multiplayer

Then have multiple interrupts and send the trains to differently named dropoff stations. That will work. It will just introduce some unneccesary complexity in the interrupts. For the train and the scheduling system it's not relevant that the coal receiver is using the coal for. Only thing that matte...