Room correction help

I'll vote with cal18, although using an older Behringer 8024 vs. the newer 2496.  I've been doing this for...damn, nearly 3 decades, starting with an AudioControl C101 long ago and far away....

Never been one to clutter up a room with panels, traps, etc.  SAF is one concern, but her primary concern is being able to use the equipment without a degree in audio engineering. ;)

Rugs, curtains, and some 'tasteful additions' can go a long way.  All homes I've lived in have always been problematic acoustically.  The only way one can achieve 'Perfection' is to have the space 'built for purpose' which most of us can't achieve....

As Clint noted: "A man has to know his limitations."

The Answer: 2 systems.
-Main living space set up for Simplicity, but properly eq'd and capable of pleasing the both of us.
-My 'play space', which is just as insane as I might care to have it. *G*  (But capable of sending a feed to the mains in the living room...have your cake, and listen to it, too....*smirk*).

"Thinking outside the box" is easy.  Stop thinking there is a box to be outside of.... ;)

Diffusers and general room treatment are great, but I think you need to address speaker placement first; it's cheap & doesn't affect WAF. At 2.5ft from front & sidewalls may not be optimum. I recommend you try 2.5-2.8' from side walls & ~4.5 from the front wall and adjust thereafter for the best bass. Then place the flokati in front in-between the spkrs & sitting position -- or wherever the wife prefers (if it kills the sound she will hear it & correct).

Perhaps if you cannot here much difference there is a reflection that over powers the places you have tried . A mirror placed on surfaces should show you if you are accurately finding the reflective points in your room . After i switched to very wide dispersion components i got reflection . (077,2441,harstfield lenses.)
when i used stuff a touch more beamy i did not . (Cat eye 076, 2344)  its an ideal time to see if placement benefits your cause the most , then room treat( try the mirror to help guide )  , then position speakers again , you will never be done . This is a forever hobby . 

Listening position is center room and can not be changed do to door way.  The speakers actually sound great where they are and I have very good sound stage, maybe I will put closer together.  I did look at cardas, that's in a perfect room without certain challenges,  door ways. My lows are excellent.  Unfortunately we all have challenges with rooms.