I think that they should be allowed. Yes, it does get annoying, but at the end of the day it's still a strategy in trading.
+1 !rtd Is not needed for this reason:
Finally, I think that all xG members that meet the following requirements should be allowed to middleman:
1. Has experience of being one.
2. Has a backpack value of at least 1 bud.
3. They are trusted by the public and community.
I doubt many in xG would run off as they would be banned and potentially kicked out of xG.
Any constructive and mature criticism will be noted.