I agree with @Aerythia.6415 re: the Obsidian Flesh change. It should be kept as it currently is in PvE, but it definitely should be changed in PvP/WvW. Most long-time Elementalist players will agree, considering the feedback I saw in the original post. The 50-second cooldown balances it out pretty nicely as is in PvE, since it's pretty much already a waste to use it recklessly.