I guess to answer the question, I doubt special Blaziken will be a thing. Aura Sphere is waaay weaker than High Jump Kick / Close Combat and I don't think Scorching Sands covers anything besides Toxapex and it's not like Blaziken didn't have EQ already. Additionally Blaziken has Swords Dance but not Nasty Plot / Calm Mind. Also stuff like Intimidate Gyarados / Salamence / Landorus-T that in the past might have made a Special Blaziken look nice aren't really common anymore (Lando-T will be back I guess).
So it probably won't see any usage in OU / Ubers as a special attacker. There's just no real reason to take such a massive drop in power in exchange for special attacks instead of physical.
252 Atk Life Orb Blaziken High Jump Kick vs. 0 HP / 0 Def Manaphy: 261-308 (76.5 - 90.3%)
252 SpA Life Orb Blaziken Aura Sphere vs. 0 HP / 0 SpD Manaphy: 152-179 (44.5 - 52.4%)
No thanks.
So it probably won't see any usage in OU / Ubers as a special attacker. There's just no real reason to take such a massive drop in power in exchange for special attacks instead of physical.
252 Atk Life Orb Blaziken High Jump Kick vs. 0 HP / 0 Def Manaphy: 261-308 (76.5 - 90.3%)
252 SpA Life Orb Blaziken Aura Sphere vs. 0 HP / 0 SpD Manaphy: 152-179 (44.5 - 52.4%)
No thanks.