Guidance

Dyne audio lifestyle speaker designed for WAF (undersized cabinet, lackluster drivers, etc) isn’t the right speaker to address such deficiencies.

You could sell it and get

mofi 888 + rythmik f12g subwoofer

or

tekton epic 15 + tekton cinema sub (on the cheap)

If you have bigger pockets, there are other options as well.

But, before you sell or buy anything...fix your room (issues that contribute to thin weightless sound)

when you measure things, you will notice some dips/nulls in the 100 to 300hz range. Put 5 inch thick absorption panels (gik 244, for example) on ceiling right above you and to walls on either side of you, for starters. If you are set up on the long wall, you could either move your seat back/forth out of a lengthwise null a bit..or put thick absorption on wall behind you (not all over the place and suck the life out of your room, but, only behind, to either side and on ceiling... it is very simple physics pertaining to standing wave nullification). i would suggest acoustic fields acda because it is fine tuned for rate of absorption n all, get down to 30ish hz..., but, many of you guys would rather spend on cables than treatment. So, some cheap gik could also work, sorta.

A subwoofer can also be used to fix nulls at freq ranges within its range of operation, not above its range, hope that helps.

i feel like my system sounds pretty good and I personally get multiple hours of listening from my system (almost daily)but I feel like I am missing some weight in mid frequencies and the sound can seem thin now and then.

@hilde45 thanks again for the feedback, great advice for a newbie.

I completely understand that the process is going to be iterative, and as best as I can, I would like to avoid swapping stuff out just for the sake of it. I am of the mindset that I should overinvest now (even though in very very small steps) to make sure that changes I make would pay dividends long term, and I can eventually get to a system I'd enjoy for a long while.

And with that in mind, I like your suggestion around acoustics and room dynamics and letting that be the first domino to fall.  

You did not mention how much digital vs analog you listen to, but an upgrade from the Bluesound to separate streamer and DAC would make a considerable difference if digital is your thing. 

@samiamsam If possible have one of two dedicated AC circuit breakers added for your audio AC needs along with upgraded AC receptacles. If that is not doable then at least upgrade your AC outlets vs standard outlets that you might be currently using. A power conditioner is a possibility if you can't go the route of dedicated circuits however I would suggest you work on your room acoustics first.

I am of the mindset that I should overinvest now (even though in very very small steps) to make sure that changes I make would pay dividends long term, and I can eventually get to a system I'd enjoy for a long while.

Good deal. I am saying what I did because I spent too much on speakers with Be tweeters that turned out to be too bright -- not at the beginning, when my room sucked, but later after I got my room in better shape. In other words, good gear then didn't turn out to be good gear later. And I wasted a lot of time shopping and spending and then selling those speakers (and some other gear, too.).