I recently asked about the plausibility of a fully-enclosed modern combat helmet, whose design took cues from the Corinthian helmet, a human skull and a scowling face. This "Corinthian-Type Helmet" would have incorporated features such as a vacuum seal, polarised lenses, tubes connected to a re-breather in the wearer's armour, small lights mounted on the cheek-guards and the helmet's back coming down to collar level to protect the wearer's neck. The concept behind such a design was that I wanted to make the wearer look intimidating and prepared for any combat situation that might occur while de-humanizing them as much as possible.
I didn't take long for me to realise that the whole "Corinthian-Type Helmet" was an idea that looked good on paper but was terrible in practice, as kingledion's response did an excellent job of outlining this helmet's impracticalities, which included:
Restricting neck movement and being extremely heavy to wear, due to the sheer amount of electronics contained within the helmet
Impeding breathing and promoting moisture or bacteria growth thanks to no ventilation
Limiting the wearer's peripheral vision by allowing sweat and moisture to build upon the faceplate in high-temperature environments
The faceplate's fragility and inability to withstand damage
FEATURES OF THE CORINTHIAN-TYPE HELMET 2.0
The rebreather and breathing tubes have been phased out in favour of vent holes being incorporated into the helmet's front, crown and back, allowing air to pass through the helmet and stop the lenses misting up
The faceplate has been replaced with a large pair of rhombus-shaped eyeholes tilted at a 45-degree angle, which combined with a downward slanting forehead shield, make the helmet resemble a scowling face
The cheek-guard lights mounted lights have been removed and replaced with a feature that allows the wearer to see better in darkness via switching to night or infrared vision, which can be controlled by the wearer using a wrist-mounted device
Polarised lens projecting a HUD displaying the wearer's vital signs, a motion tracking sensor and ammo readouts
The very end of the helmet's back is shaped in a flipped upward fashion, allowing the wear to tilt it back over their head when not in combat as per their namesake
How practical would such a combat helmet be?