What you describe sounds accurate. With each year Suzuki improved some small issues, but there aren't a lot of huge issues with this bike except as noted on this forum.
My bike (2014) has no idle knocking, it has never stalled in traffic, but does occasionally when I am in the dirt, which I find annoying, but it hasn't killed me yet (knock on wood). The idle could be improved when cold starting, a new ECU would fix that likely, but as you mentioned, Suzuki is not too keen on swapping out parts to make customers happy, so that issue remains for the time being.
An amazing bike for very little money. You can easily go out and spend more money, for a heavier bike with a few more add-on's and still end up with issues, so pick your fight carefully.