I tried usteer on my recent wifi rebuild/updates, and I am for sure sticking with good old DAWN instead. https://openwrt.org/docs/guide-user/network/wifi/dawn

DAWN wasn't flawless out of box about choosing bands, and would sometimes trash a bit... but it generally worked great for the 3x r7800's I had. And it would generally help band steer people to 5ghz in useful ways.

Usteer has everyone packed onto 2.4GHz. With very rare exception. It just doesn't seem to bandsteer well at all, in my view.

Agreed that this should be a top priority, so so much. Bandsteer and multi-AP are very similar problem-sets; even if users only have a single AP they need good steering to have a good experience. DAWN has started making that a reality (well before usteer) and continues to be the only viable open source option for people right now.