Looking at the game again, I feel that the Plant-ghost-thing is probably too hard to be in the first mansion, especially with the changes that have been made. Hearts aren't exactly easy to find, and it doesn't help that the hearts have been removed to replace fireballs at certain moments during the boss. I feel that you should probably regain your hearts on death as well, because I remember at one point I was stuck on 6 hp for a long time. Other than that, the game's still great.