intrumental in progress, i would like input please

hi everyone, thanks for listening.

this is a piece i was writing, the changes are basically asus4>g, rpt, c>f>c>d

i am open to hearing all different points of view on what else i should do with it

should i:

- add a melody section over those basic changes?

- add a melody section over a new section ( different chords)?

-leave it alone and just expand on what is there using more dynamics?

-add lyrics?

thanks for any and all input

http://www.youtube.com/watch?v=cEL3QuM5Ulo