TL;DR
Barrels are pointless and not fun. Get rid of them.What ?
Barrels and all barrel-related content should be removed from Factorio, since they are almost-never-used extra-hassle alternatives to fluid wagons and pipes.Why ?
Barrels have long been obsolete since the advent of pipes and fluid wagons. They are essentially "bloat" at this point. Fluids don't need to be a discrete item that can be placed on belts any more than you need to be able to liquify iron plates to transport in a fluid wagon.This is a relic of the development process of Factorio so far, and it would be awesome to cut the bloat on the path to v1.0.