Tbh, the only gripe i have is the last 3 big water mobs pull before Nixie. Like you could have pulled it alongside the 2 previous groups, but the fountain is only activated after defeating those 2 groups.
I understand that the fountain teaches you that you use it as a spring platform for the upcoming Nixie boss, but that group seems really out of place.
Also Trusts AI could definitely use some improvement, so they actually use the fountains to go up the platform with the adds and not just stand there until we're all dead.