I do not find the rock distracting, for me it provides a sense of scale. I find the reflection of the mountain too bright.
I like the composition as is. The rock provides both a sense of depth, as well as placing a natural object in front of the almost graphical drawing in the back. The latter being the interest of the image for me. I do find the reflection too bright as well, also makes a slightly artificial look. Plus I also find the rather visible USM borders distracting. For screen output, it wouldn't need that much imo.
edit: the mountains in the back could use a little more separation from the sky.