1) since the mmo map shows the snowy north and warmer south
shouldn't there we diffenrent armor looks maybe some fur in the northern armor (vikings) and less armor / more ventilation for fighting in the south (arab/persians)
2) could lead to maybe debuffs if you wear viking armor in the south and vice versa , like a -20% move speed due to overheating/under cooling .
maybe do like ARK survival evolved where you can't really go north untill you have the proper clothing
(haven't played the mmo so i don't know if it's in already or not)