People will stop caring about the looks of a character, particularly female ones, when the devs stop caring so much about making them eye candy.
Samus in high heels? Not necessary. I'd say a vast swath of the world is fine with her in at most an inch, or two of heels, like boots, but not high heels.
I'd say a vast swath of the world was used to Samus in a full body suit under her armor, even though Samus was not in one originally under that armor, but now she's in a form fitting top, and shorts.
Now I'm generally not one to hate it, as I'd rather look beyond the fan service, but I understand where it's coming from.