I understand quite well that the MOH and Best Man have duties and jobs they have to carry, but my fiancee and I made the decision that we were not going to have any sort of "Best Man" or "Maid of Honor" when it came to wedding planning as we felt it could cause unnecessary drama.
Instead, what my fiancee and I decided to do was have each bridesmaid and groomsman do some sort of job. For example, we put one groomsman to be in charge of collecting cards and gifts after the wedding, and dropping the off at our apartment. As such we even had one specific bridesmaid and groomsman that we felt we were close enough to, to do the typical MOH and Best Man speeches.
Quite a while ago, I remember hearing from my bridesmaid, that her mom and her sisters were talking about how "weird" and "terrible" it was for me to assign bridesmaids and groomsmen jobs for the wedding. When for their weddings, the only thing they had their bridal party do was wear the proper attire.
I can understand where they're coming from, but for me, being a bridesmaid and groomsmen is an honor, and therefore, I don't think I should be labeled as being "terrible" just because I relegated some tasks for each of them to do.