Here Is A Guitar Riff. Any Ideas?

I have this (guitar) riff, most likely as an intro.

Distortion, Echo (Slap back, fade):
Slowly:
E)---------------------------------------------------------------------------
A)--------------0------0-----0------0----0---0-----0---0----------------
D)--------------7------5-----3------2-h--3p-2-----3s-5----------------
G)----------------------------------------------------------------------------
b)----------------------------------------------------------------------------
e-----------------------------------------------------------------------------

I literally just thought of this right now. Any ideas? I want to build it up, kind of have vocals in the intro to lead into something else...just don't know where to take it...it has an anticipating ominous vibe to it...I could do so much.
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26-30
Jan 6, 2013