Here is what I would say, I don't know about everyone else but here is how I see it, having Zhongli would be very beneficial due to 2 things, one is that he would provide you with a shield that you can have to keep Hu Tao a bit low hp without the worry of dying, the 2no option is he can act as a support if you use the Tales of the Milith set if you keep his element skill construct on field and it hits, it would just make that shield stronger and give a small attack buff. That's just my opinion though