Made proxies undestructible and made neutral force
This caused some issues if a tanker has been attacked and only the proxy was destroyed. Trains could get stuck at stations because they couldn't unload the liquid. Also when it's in the neutral force biters shouldn't even try attacking it (I think, haven't tested this one).
I'll have to test if neutral force is enough for biters not attacking it. Making it undestructible makes it difficult to remove proxies that got left behind (if that is still an issue? haven't had any reports for a long time), biters might also get stuck trying to destroy it (i think?) If neutral force is enough, i could change the hitpoints to the same as the wagon and destroy it (or vice versa) if the proxy gets destroyed (fire, explosions, etc). MIght not be worth it if 0.15 finally includes a tanker though.
Well, I never had any problems with proxies being left behind... What about just making them non-selectable? Then even if they were left behind the player couldn't notice. And they could happily be undestructible. Also I don't think the biters would get stuck on them since even if you try to shoot them, the game just says that the proxy can't be damaged, plus they can't collide with them... And yea, making any big changes is probably not worth it at this point...