Great ideas.

My feedback:
1. Heroics only (except maybe for WoD as its current)
2. No heirlooms. Also, state your teams iLVL - I know its not a competition but it can feel a bit meaningless watching someone box an instance with no idea of how geared they are. Knowing the iLvl allows the viewer to gauge how effective the team composition is, as well as the player.
3. Do each instance with as many different team variations as time/sanity allows This is what i love about boxing - same content different team.
4. Only include the harder trash fights, if any.

1 and 4 are mainly included to facilitate 3