The problem with the atomic engine now is bulk

[RocketBlam]

I'm agreeable to editable tanks, and also agreeable to procedural tanks. But I'm also agreeable to just having a 2.5m part that is fully LF.

I mean, they have smaller parts that are LF, and big spaceplane parts... it doesn't seem to be out of the ordinary.

[arq]

The argument (shared by Scott Manley) that "LF+O tanks are fair for LV-Ns because of reduced propellant density" breaks down as soon as you notice that LF only tanks exist. Either tank fuel types should be tweakable (or, as a weaker option, add more LF only tanks) or the aircraft fuel tanks should be removed for 'balance' reasons (and what a wreck that would be for airbreathers).

[tutike2000]

Just install the Fuel Switcher mod. Then we can nag Squad to make it stock.

[Juicy]

The beauty of LEGO is, that a little 2x1 block can be part of a brick wall in one build, but an engine nacelle for a plane in another build. Tweakable contents of fuel tanks would accomplish that same thing.

[NecroBones]

I too like the "LEGO" sort of construction as being standard. But having "Fuel Switch" become a stock feature? That would be awesome.