Heya!

No, they shouldn't. It's perfect content for those who don't have much time to dedicate on the game (myself included).
I like some challenge when I don't do leves in a party, so I just take a leve and put it 5 stars and see if I can come out with some strategies or whatsoever, and if I can't do it, I just drop it by 1 star and redo the spiral.

See ya!