>>6988265I mean. Alt culture might be going through an ebb but it's not like most of the people purchasing MH were actual goths, it sold mostly to kids (and was very successful because kids actually LOVE poseability and multipart outfits that they can perpetually dress/redress. Because they like playing with toys. Who would have thought!)
Sure, it certainly helped that they looked 'different' -- kids aren't goths, but slightly weird young girls seemed to dig the "be yourself, be a monster" message (and what young girl doesn't feel at least a little weird after a certain age) as well as the slightly gorey and creepy accessories being a change from the usual. But looking different from other available lines isn't a dated concept that requires certain fashions to be popular. And in the current toy landscape a slightly gothy looking line like MH would be exactly as different-looking.
MH was killed by execs making decisions based on their own conservative/milquetoast tastes (decisions which watered down the appeal of the line to both kids and collectors, an effect which snowballed as they tmade cheaper and cheaper/less effort dolls to bolster the profits.)
tl;dr yes, the niche of MH is ample to be filled, although it won't necessarily be something creepy. It seems like there are companies trying (MC2, DC superheroes) but none are succeeding yet or very appealing because they aren't 'different' enough to stand out and also don't have the quality and playability of good-times MH.