Here’s the thing: the Moroes’ Famous Polish makes a character completely naked for 10 minutes, and can be used every 30 minutes. So, for the sake of argument, Blizzard has deemed it OK to be naked 20 minutes out of every hour.
Now, go to Transmog - I can hide every piece of clothing - except pants. So for some reason, Blizzard has deemed it not ok to be completely naked for 40 minutes out of every hour.
Neither option prevents players from removing pants, so it is possible to have a completely naked character all of the time by sacrificing a few stats for 40 minutes out of every hour.
But here’s the thing - characters are never actually completely naked anyways - it’s more like a bikini or swim suite. So why can’t we hide legs in the transmog? Why the 20 minute per hour limit with a stat debuff the rest of the time?