Well in my honest opinion, subwoofers from brands such as Rythmik, PSA, HSU, monolith, funk, and JTR etc, offer much better performance, especially for HT.
I also think JL is overpriced, although the finish is sometimes better than other brands. I think if you had a pair of large diameter ported subs from one of the aforementioned brands you’d be surprised at how much impact and depth you’re not getting now. I also believe those brands build subs that are every bit as good for music. Just my personal opinion.
I do love your mains though. Just beautiful.
Also, what are those rear surrounds? From the back the one kinda looks like a JBL s412.