The biote removal "debuff" has to go. The intention is good, but the result will be *a lot* of grumpy players. There are oodles of valid reasons why an L100 would be passing through or going to the Parsinia cedar spawn, and all of a sudden *poof* he finds himself by Last Stand. This would get *extremely* annoying for *a lot* of people.
If possible, instead create a passive ability for the treants that makes all incoming damage 0 if the attacker is over X level. This way players over the desired level won't be able to hurt the mobs, but will still be able to root/mez them to keep them away, if they get aggroed. If this is not possible, the current solution still has to go.