Being big into raiding in MMOs in my younger years, this premise ticks a lot of boxes for me. However, right now the gameplay needs some work. I think before focusing too much on the recruiting aspect, different gearsets, stat specificity etc, the boss fight itself should be ironed out as it felt confusing and didn't leave me wanting to improve in order to beat it. The controls to give each character directions were clunky and I'm not sure that they did anything. I wasn't sure what the range of the healer was, whether they were targeting or aoe healing, how the support class chose who to shield, etc. And melee didn't seem to run out of the fire (which is kind of accurate, lol) but it was frustrating to not know how to influence that.
Keep going with the concept though, there's definitely a playerbase for management sims and this theme has the potential to be really clever.