No support, all block glitches can easily be removed without aesthetically ruining the maps with barriers. Map makers need to go over their maps more carefully and remove potentially problematic spots such as air holes in trees. If the map maker wants people in these areas they should be responsible for making a path all players can use without glitches. Until then people are going to do it and they have the possibility of punishment.
I don't know... Neutral. It WOULD basically be cheating, but like you said, the map snow does kinda need it...
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