I think TP and WW bosses are redicuously easy. It's like hmm....look the boss door. No need to prepare. LEt's go in. Comes out, no damage done. I recently started playing Alttp and I actually die once or twice before I beat the boss. They are much harder. There is a certain way that you have to go to beat them yes, but they are constantly attacking. No matter whether they are being attacked.

And in the more recent games health is so easy to get. In Alttp, im like crap, I'm gonna have to fight the boss with only four hearts because I can't find any. It needs to be hard. In boss rooms there doesn't need to be dozens of pots in there. The boss should send out some monsters, I like that idea. But 75% of the time they shouldn't give you health. So you have to be on your toes so you don't get hurt alot. The games are like: crap, the boss actually hurt me! instead of Oh no! half a heart left!.