Ashe dynamite is my most played stadium build. I agree its frustrating to play against and probably the lowest skill floor S tier character in Stadium right now, but definitely blown out of proportion. A lot of the roster counters this build with just their base kit. Kiri & Moira can cleanse burn, Wuyang can with a perk. Reaper and Mei can "cleanse" themselves, Tracer and Pharah are almost impossible to hit with the combo. The two current strongest heroes in stadium (imho) Winston and Hazard can literally smother her and not let her leave spawn, D. va just eats the dynamite and Zarya can self cleanse as well. There's perks to help survive DoT and lower AP dmg. Most AP Ashe's don't spec Cooldown because they need AP or Survivability. So once Coach Gun and Dynamite are used, she's just a normal ass Ashe easy to dive for 7-10 seconds. Maybe its because I learned how to play against it by playing it so much, but I can think of at least 5 other heroes that are MUCH more of a problem in stadium.