I like this tune.  The instrumentation is great.  I have to agree with you that the bass is light.  The other thing that stood out to me is that the vocal seems to be too out front at times.  I know I get a lot of flack for this sometimes but I like the vocals in the mix as though they are in the same room with the band.  But hey, mixing is all subjective.  You have a great song here that is VERY marketable.  It has a nice modern sound.  Good luck.