To give 30 might to 10 man he would need a full set of diviner gear for the concentration to uphold a full boon duration
And sacrifice a trait choice to be able to go up to 30 might
How game braking would this change be?
Would this be better on another class/profession?
Do you think other boons should be able to go a bit beyond their limit (upgraded/stronger) with certain classes/professions?
The elementalist can already give a stronger boon protection to his allies and himself