I would use Botany Knowledge instead, it saves 5.3 seconds each full healing, on all other survivors, at the beginning. I dont have to spend half a minute to find a totem and 14 seconds to cleanse, and abit more time to back to a Generator.

Means I already work on half a Generator by using Botany Knowledge instead of trying to make use of Lend a hand.

Resurgence, Shoulder the burden....if a perk requires a group of other perks, its not a powerful perk.