Interesting to see somewhat opposing perspectives :)
The appeal of vinyl to me is more sentimental than anything. I am happy when a new LP arrives on my doorstep from one of my favourite bands. That said, I want them to sound amazing and I might get into the sonic benefits of analog (although I know some pressings could be inferior).
So the turntable would be more of a warm and fuzzy sentimental upgrade… And while I am happy with my system now, I know first hand what my system COULD sound like with upgraded speakers. While auditioning the B&W 802 D3’s with my amp and an equivalent streamer, I had the experience of hearing new details in music I’ve listened to for almost 30 years…. But ultimately the 802’s were too mid forward, all about the mids in your face, too light on bass for me, and had terrible off-axis performance. Still, it was eye-opening to see what a higher end speaker could do with imaging, transparency, air, and dynamics. Of note, my amp is worth double my current speakers, so my system is a bit mismatched from that perspective.
But that’s me. I’m interested in what others would prioritize if in my scenario….