It's good but not great or amazing for me, different peeps different taste you know.
Naw, it's stated that 3 is dead and Bosacius who's missing is now also dead, while the pyro Yaksha is definitely dead, you could make a case for either of the hydro and geo yaksha to survive, Geo blasted hydro and hydro stabbed geo, it could be that one of them didn't die but decided to make it look like they died and all that they need to do is have a change of appearance and suppress their power since Zhongli went off pretty well with barely anyone noticing him.
Edit: I genjutsu myself into thinking that you said that "thus the 4 yakshas are playable", anyway, wish so too, they all seem to be pretty chill and would likely be like madam ping, she's likely a Yaksha considering her young form appear in a group portraying XIao and Parvases both of whom are yaksha, which would indicate that they could abdicate from their possition if they want to or atleast that possibility is there.