Some of real situations I was in which resulted in loses because of medals mismanagement. Who should take the medals in these cases?

1) A tank has 150 medals and enemy team drops 50 more. However it has players famous for easy killing 4 stacks (200 medals) tanks every match. Should a tank take 4 stacks and die later? Or let dps/healer take 1 stack (they'll drop only 75 when killed which is still better than tank's 100).

2) A tank took 2 stacks (100+50+25 from kills) and enemy team drops 50 more. He uses Get medals! macro but a team ignores it. 1 second left before medals will be returned to enemy team. Should he take 175+50=225=7 stacks and likely die or let medals be returned when his team is losing already? A lose/lose situation.

3) A team has 550 medals (200 tank, 150 ranged, 150 melee, 50 healer) and enemy team drops 25 more. However 50 healer can't pick them up because he died and waiting for respawn. Who should pick up these 25? (It's amazing how many 575 score games were ultimatelly lost when we needed just one more kill for 600 and match end).