If you weight the weapon too heavily, someone will grab something top end end (270) and throw on a bunch of spiritbonding gear, still barely meet the ilevel requirements and become a drain on the healers when they need multiple raises throughout the fight due to low health. Without the additional stats from gear, damage won't even be acceptable, much less optimal. There will always be people who find the simplest, easiest method (for them) to get what they want, and it usually involves being carried.