Cool song, likes it a lot , great arranging and playing.
Funny I have a feeling our systems have different perspectives on the low end, I found it a bit overwhelming and had to turn it down. I had just listened to a bunch of songs on the forum here, and yours was WAY loud in the low end. Not complaining but just thought I'd mention that as you thought my song needed
more low end. :)
If your playback system is weak in the low end then that explains it.
My home stereo , which I listen on, is a bass heavy system typical of most. So I find if the bass is overwhelming when played on it, then I need to apply a little hi pass to the mix. This is usually between 65- 95 Hz.
My Monitors are Yamaha NSM 10 which are well known to lack low end. I have gotten used to the way they should sound and am never far off the mark with mixes.
The other possibility is you have applied a massive dose of Boost 11 :}