The room measures fine to me. Many are much worse. People just don’t measure and they have no idea.
two things stood out to me.
#1 the seating distance
with the speakers 8’ apart my max seating distance would be 10’ and for me I would try closer to 8’ as it would maximize soundstage width at the cost of center focus (personal taste). Then I would toe in until the center focus is back. The down side of what I described is you shrink the sweet spot but you get a better sweet spot imo.
Being so far away also pulls in a lot more room reflections. Closer will be more direct sound.
#2 the equal distance from the side wall to back wall from the driver face should be avoided. This will increase the null created by the wave length that has a 1/4 wave of 3’. Which is right around 90hz. It will also result in a peak but I am not sure where that peak will be, but higher like 180hz for example. I would move them closer to the back wall (I know this sounds wrong but try it) to avoid equal distances.
the low end roll off is just using small speakers without correction, it is what it is.