recently i ve done this instance multiple time in a row for The Black Heart trinket.
i m gearing my dk-tank.

found/discovered interesting tactic in mounted fight.
i would define "strategy of the centre", like a chess strat
not sure others have reported or tested/done in same way. so i write about it.
basically, when it s time to fight 3 champions, mounted phase, i rush them, engaging in middle.
advantage: it permits to avoid the first charge.
the idea is to avoid charges, making the fight fast and easy. fight have place in middle of the arena.
there is a tricky bug there. it happens often.
if you rush them in middle, looks like they are not fully engaged. a couple of them, generally those we are not attacking, dont charge. unique mob do charge manouvers is the main target.
it works good in heroic mode too. but dmg is higher and can happens i need to get new mount during the fight.
in normal mode this approach make the vehicles fight a lot easier and faster.

i dont have reported this trick, strange engaged status for mobs. generally my reports about bugs or little exploits are totally ignored, so i ve negative feelings about continue reporting these things.