I thought it was really neat. Did the Legendary solo on my first run. I made it all the way to the boss and then Destiny crashed so I had to do it again. It was much faster the second time. The difficulty feels great, I think. It lets builds really shine, which is always fun, but it’s also not the tedious affair that solo Dungeons can be.
I’ll be interested to see how or if it progresses or changes week by week. Presage was neat, but it got tedious enough that I stopped doing it regularly after week three or something and never did get all the collectibles or hidden compartments. Hawkmoon’s boss rotation was near, though, and I wouldn’t mind seeing something like that again.