This was a nice addition. Regarding the surface vs volume optimisation I remember it was a high school mathematics problem but after review it this proportion is a height twice the radius of the cilinder, the standard/classic proportion deviates to a ~2.2 value considering many other factors like manufacturing limitations, etc. In any case the classic is closer to reduce the waste, etc than the slender one, the standard has like a 1.5% larger surface than the ideal, but the slim goes up to a ~10%