I've been informed during HDlax1's run at SGDQ 2017, one of the guys said that in the Japanese version, your vacuum is stronger in New Game +. I don't know if he meant that genuinely in Hidden Mansion mode, or that JPN New Game + is superior to ENG New Game +. (This is said about 49 seconds in the run)
I don't know... he could be right or maybe he fumbled his words, but I just want to confirm something for sure: Is the vacuum stronger in JPN NG+ or is the strength of the vacuum in NG+ the same in both ENG/JPN versions?
To answer Retro's question, The vacuum is stronger in NG+ for both versions of the game. To answer Mugg's question, When catching a boo in Butler's Room and Hidden room, we can walk into the mouse hole and skip the text that normally appears when catching boos.