I fully love the art of sneaking and stealth in a game as an option for style of play, and one which I tend to favour.
But come on Bethesda, being able to stay HIDDEN in sneak mode (especially in buildings where acoustics apply) whilst inside Power Armor which no matter how much of a sneaky so-n-so you are or how slowly you place each step...... YOU'RE WEARING POWER ARMOR AND YET CAN REMAIN UNDETECTED!!!
Stupid
The game should make you take a decision to either use the PA and take a more direct tank style, or exit it some distance away (or not use it at all) so the art of ninja tactics is available.