Myung and Petrucci easilly are worth watching for other works, Rudess also is amazing. Lebrie is good but decent singers are not really something I watch. Anyways, yeah Portnoy leaving is pretty huge, one of the founding members of the band, leaves Petrucci and Myung left of the founders.
He was also pretty deeply involved with the writing of the music, but the others have easilly written enough other tracks on DT albums that are good, so musically they should still be worth following, they just have to replace an insanely good technical drummer with another.
On the other hand, might mean more hopes for LTE stuff in the future maybe please kthx?
Emiliana Torrini - Bleeder.