First of all, I don't consider this a hijack at all....you've made a logical adjustment which adheres to the basic tenants of this set/thread. Thank you for sharing this....
I've been toying with something similar and I agree that am will be playable at a lower mm injury value. You are also correct about the oline getting a boost the higher you go on mm injury...
Question: have you kept the other settings the same as op aside from difficulty at all madden in both mm and CFM, injury at 2 (I.e. you are keeping the speed settings at normal/slow)? I want to be sure I am using the same setup....if I like what I see, I can add it as an alternate setup...