If tanks are at the minimum average IL 142 but the DPS are 240, then the tanks aren't keeping the boss aggro. Seen it happen multiple times now and it's not really fair for the new tanks to be blamed.

The divide between minimum and maximum gear at level 60 is already very wide. So sync this fight to IL 180, same as The Aetherochemical Research Facility.

Feel free to increase tomestone reward so people won't complain about it now being slower to clear