Thank you both for the input so far!
I've bolded a couple of parts I'd like to ask for more detail on.
When you talk about the breakdown in the middle, can you clarify which part exactly you're referring to? The segment from 1:23 - 1:57 is what I would call the breakdown, is that what you're referring to? Also, when you say "it needs a more creative arrangement," is that referring to the breakdown specifically or to the entire piece? If you have any tips or suggestions for arranging in general, I'd be interested in what you have to say. As I mentioned, it's a consistent hurdle for me.
"That buzzy bass" is, unfortunately, not a terribly helpful descriptor for me. The instruments present in the intro are the main bass (with triangle sub) and the lead from the melody both playing in unison; a couple of effect synths which emphasize particular notes/beats; and what you referred to as "that quirky accompaniment" which comes in later. Based on that information, would you be able to identify which bass you're talking about?
Thanks again for your input! I'll definitely be making use of your comments as I continue to work on this piece.