I would add in

* a few more attributes to make for bigger differences in footwork...it wouldn't be more fun but add to the challenge if you fight a "runner" it would allow you to truly outbox a slower slugger

* I would like for fighters to be able to set up punches a little better

* I would like for each single punch to be rated rather than just left hand/right hand...that's too general

* I would also like for the KO's and knock downs to be a bit more realistic. Flash knockdowns are a must, body shot KO's need to look different, the doctor/ref stoppages need to be tweaked, and they have to bring back a fighter getting caught on the ropes while hurt (like the Mercer-Morrison fight) and there need to be stoppages from that.