well, it's up to the person creating the clan to tone it down and make it fair, we can't do all the work for them
it would be tricky, though. any boil techniques would probably have to be vapor only, due to their already being regular acid techniques, as seen by Kasuya's Tongue Tooth Sticky Acid. and having mostly vapor based techniques makes it difficult to tone down. imagine the Hidden Mist technique having the capability to dissolve anything caught inside it.
if someone else wants to figure it out, be my guest, but I'm not going to bother