Here's some quotes from Ron Edwards on Adept Play Discord server, June 1, 2020 regarding multiform:
"This is why there is no Shapeshift power, for example; it's inherent in Multiform. The same goes for something much smaller in scale, like a device - if you want a Multiform for it, each slot has to look totally different, work differently, literally be as if it were a different thing."
"...different ammunition for the same gun, different arrows for Hawkeye's or Green Arrow's bow, different energy emitted from different vents in Iron Man's armor (repulsor rays vs. boot jets), different shapes of ice being formed at a wave of one's hand - none of these are Multiform."
He was quite emphatic.