New listening room question

For sound quality purposes is there any benefit gained by installing a ceiling grid pattern? Would this serve as a “diffuser”. My room is 19’9” x 17’6” x 12’. There will be two ceiling fans symmetrically positioned and, as we are under construction, I have the ability to install some “architectural interest” to the ceiling in this room. I would only entertain this, however, if there is likely to be a qualitative sound benefit. Any opinions out there?

Also, are there any members here who can understand the physics/math behind the “sound node” calculators? Better yet, is there anyone willing to analyze my room measurements and tell me in layman’s terms what kind of issues I may expect to encounter in room interactions?