To begin with: I like the new Surtheim- but I do not consider him a "lesser" anymore.
With the right tactics, schools ,equippment and buffs (aso as usual) we can get him down. NP,
But
he is a quest boss for at least 2 questlines- and those who do that quests will have problems to find an adequate group in time for that kill (remember our small population on Order^^) to be able to continue with the questlines.
just my thoughts..