it's what i think also, stacks + LB , can result in a robbed match,i think medals system is good to make player not focus heal endlesly, defense buff and attack buff already make player want to focus a little more the dps.
but medals make a too strong handicap,
4 stacks on tank can is already a mess to heal, 1 stack already is enough to dps,
it's look like too much punishment to me, it make some damage loose because your team need to be more defensive and you need more heal.
I am not totaly against the system because it put variety in the match like februs said but i still think the handicap is overpowered