I know aggro radius was increased in velks because it was originally too small, but after a number of deaths I believe the pathing and aggro radius needs further review.
One area in particular is just up the ramp of the "frenzy camp" noted as number 3 on the map here:
The mobs on the end of the mid platform (the small section labeled "E") will aggro when pulling the spiders after the first group up the ramp, and effectively train your party with about 12 spiders.
Also I am unable to cast wake of tranquility on the first spider up the ramp from the bottom due to a message stating it is out of range. It shouldn't need LoS, and is only about 10 to 15 feet away, so not sure why this happens.
There are other problems most likely caused by spiders on different Z axis aggroing, and running up/down creating big pulls when they shouldn't, and also if Feign Death is used when this happens, the mobs don't seem to take the correct path back and often times wander to my group.