Most likely inspired by Joe Johnston concept art …https://www.pinterest.com/pin/430023464400062317/
Thanks. I knew I had seen those helmets somewhere before.
I found this picture of just the orig. Snowtrooper;
Seems like Johnston gradually toned down the Samurai influence until he ended up with the more simple design from the movies.
It’s a pretty neat design overall so its a shame that it hasn’t been used more in other EU material. Although it didn’t make too much sense for a snowtrooper, the “hardhat” made more sense for the bombsquad. It almost has a firefighter look to it.
BTW: Walt Simonon did a sketch of the Bombtrooper again i 2011.
Someone even made a custom Kenner figure based on SW #56.