That was what I thought about the Rose Twirls too - way too much waste for me. It's like they came up with an easy way to reduce the amount of fabric cutting, but I think it could be done differently to reduce the waste. I'd also trim after every seam to reduce bulk. I have a paper peiced rose pattern that has a similar look in the end, but is not curved. I do like the curves and they are easy enough to press and sew like that.
Tula Pink's Butterfly is another pattern that is on my short list.