If your tailoring is at 50, it's because leather armor is set to higher right now. I think lowest piece is 60 somethin.
Tailoring skill requirements to make items will be adjusted, as will most of the crafting skills, but it's a little low on the list right now, due to how often it's used. All crafting skills will get item upgrades when this happens, just right now there are a few things ahead of it, like pvm and pvp balancing.
