It's quite unfair outside of the middleman forum, honestly - I can see why the market giants would be unpleased, and I can see why little guys like me would also be unpleased for the same reason.
Middlemanning involves trust like any other major trade here, but it does not operate in the same fashion. Middlemen obtain this great distinction through a ton of time and through a ton of work, but they also receive a ton of rewards:
An eye-catching, forum-wide rank, which no other applicable position gives;
A doubling of PM space;
A complete difference in name display on the site indexes (underline);
and the ability to easily make substantial amount of money from middleman trades, no questions asked, which no one else can do unless he or she already meets (or nearly meets) the OMM application qualifications.
While I respect OMM's and all of the work they've done, I don't believe this idea deserves support. It's an incredible achievement to be an OMM, but you also already get plenty of perks for your accomplishments.
Also, Zuzel, the fact that you just became an OMM and are only now pitching this shows the wrong kind of motive behind the suggestion. It's pretty clear that you wouldn't have backed the idea of yourself having a plain, boring thread icon next to the OMM's Dragon Sq Shield icons until you qualified for said icon yourself.
Feel free to throw some hate my way, but it's a strong "No support" from me - I can't endorse this with a clear conscience unless it only applies to threads in the Middleman Forum.