I'm really not having any trouble keeping Helreath alive. With Eigun covering more ground, and getting out of heal range, I might add, it just leaves Helreath catching most of the elementals coming up our side.
In the past the stray naga would head straight for me and they would lose their healer, but that seemed to be under control on our attempts last week. From my point of view, Helreath was doing a good job of snagging, and killing, the elementals before they reached the top of the stairs.
He does a good job taking care of Mum. *grins*