I'm a little weird, in that I actually like 75m and Luigi's Mansion. I can understand why in a competitive frame they aren't the best, but 75m design allows for all kinds of interesting fights to break out and the only part that is annoying for me is the little fireballs since they are random. (The killer springs and DK are not random, and knowing how do dodge them is always good for the look of shock on your opponent.) Luigi's Mansion just makes you feel like you and your opponent are a force to be re-conned with.
I do like Temple, as I've always like the feeling it portrays. It makes the duel feel like one of those epic fights you see in the movies. I do also like all the different stages of Castle Siege. I wish I could fight in those forms individually in smash as well as with their transforming version, as there have been times I'd like to fight in just one of the three areas and can't.