Some random ideas:

Detect fluid mixing as currently, but allow players to force-place an entity using the Shift key.

Reverting to the old 'you messed up, now you have to purge the pipes' behaviour and adding a tutorial that teaches players how to purge the pipes.

Reverting to the old behaviour ...

Mr. Tact wrote:"flying fortress"?

"Aircraft" mod.

Please pretend that lamp is a laser turret.

https://i.imgur.com/MQCc7Ng.png

0eNqVlM1uozAQgN9lzlARSNIU7a2PsaqQgWkyWmOjsd1sGvHuHYeWpinZbC8Ye8bf/PsItQ7YMxkP5RGoscZB+fsIjrZG6XjmDz1CCeSxgwSM6uJuG0zqAzN6GBIg0+JfKBdDcvNib/fIqduTb3ZnV ...

Why can't I get it to power electrically? I have the following mods, on the latest stable release (16.36-2):

Aircraft 1.4.1
ElectricVehicles3 0.5.1
Helicopters 0.2.16
Induction Charging 1.5.12
Vehicle Grid 0.2.0

And, probably not relevant:
Bigger Batteries 1.0.2
Bottleneck 0.9.1
EvoGUI 0.4.302 ...

Lovely mod, and the new equipment grids make things much more interesting (I added a 3x4 grid to the cargo plane, just to be able to play with that. There's not much you can do with that space, or at least I haven't found anything particularly clever).

I do have one question though -- why choose ...