I am no expert obviously but I still am of the opinion that for Val to be as good as Caira or Slim (Laz is more his own category imo) she needs some better self-healing. Not as much as those two since she does have tranqs but maybe like when she heals someone she heals for half the rate. Give her ways to get her health up a little bit other than heal burst.
Or adjust her heal burst to Lazarus levels. I still think the tranq buff had an unintended side effect of punishing already losing monsters but didn’t help her that much against stage 2 and 3 monsters. It being so easy to keep stacked on the larger monsters also feels a little frustrating.