Good mix.
I could use more BGVs. Dynamically it's a little flat and could get a little grander in the choruses. Maybe automate the accordion or snare or maybe even the decca tree to give a rise to the song in those sections and give more of a journey for the listener.
I'd prefer the bass in the center but that might be more of a personal preference. It's not a problem, though. It's definitely easier to get away with panning upright basses and have it work.
It doesn't have to sound good. People just need to think it sounds good.
Accordion automated on some parts by a little. Some snare hits exagrrated (at part changes) but obviously needs more work on these elements. Raising decca tree is a good idea
For all instruments I wanted follow real paning on the stage. For balance of bass sound I can put lows on center, upper (finger etc) to right.
I like it. Listening compared to my mix, I feel like yours is a little more buttery/silky, especially the lead vocal. Your take on that is like a glob of warm butter sliding down a pancake in an IHOP commercial.
Im wondering how much it shifts it using the room mike as much of a base as you have - if iirc, I don't think I used the room at all in mine, or very very little if any. Id be curious how your mix sounds with the room mike cut entirely, and soloing the room mike, simply curiosity, no opinions on that being a good thing (If anything I would suspect cutting the room mike from your mix would lose more than gain).
I feel like the lead vocal could be a bit more present. Id love to hear the presence of my mix's lead vocal combined with the butteriness of yours.