252+ SpA Aegislash-Blade Shadow Ball vs. 252 HP / 0 SpD Scolipede: 217-256 (66.9 - 79%) -- guaranteed 2HKO
252+ SpA Spell Tag Aegislash-Blade Shadow Ball vs. 252 HP / 0 SpD Scolipede: 259-306 (79.9 - 94.4%) -- guaranteed 2HKO
Does it hurt? Heck yeah it does, but if he really needed to, Scoli can frequently take a hit from aegi (namely non-spell tag aegi) for an iron defense and pass to something like clefable or togekiss, which non flash cannon aegis can do very little to. Also, Aegi can do absolutely nothing to stop him from speed passing other then spam shadow ball and pray that he hits the swap in very hard, as shadow sneak does very little.
0 Atk Spell Tag Aegislash-Blade Shadow Sneak vs. 252 HP / 252+ Def Scolipede: 58-69 (17.9 - 21.2%) -- possible 5HKO
252+ Atk Aegislash-Blade Shadow Sneak vs. 252 HP / 252+ Def Scolipede: 63-75 (19.4 - 23.1%) -- possible 5HKO
As I have admitted in my analysis, special attackers do hinder scolipede in that he usually cannot use iron defense for free, but unless you can guarantee that you will have a special attacker out each time scolipede comes in, then all it really takes is for one to use something like Bisharp or Mamoswine to revenge kill one of your mons for scolipede to get the opportunity he needs.
Oh, and if the Scoli user
really hated aegi, there is no reason in the world why he cannot run earthquake.
8 Atk Scolipede Earthquake vs. 252 HP / 0 Def Aegislash-Blade: 252-298 (77.7 - 91.9%) -- guaranteed 2HKO
with just a small amount of prior damage, scoli can protect on the obvious shadow ball and then EQ for a free kill. Scoli can run rock slide to do this to the zards and weakened genies. Scolipede actually has ways to work around his counters if they are sufficiently weakened. Obviously, he only has four moveslots, which limits the shenanigans he can pull off, but this should still be scary to you.
Syberia The reason espeon is a problem on BP is that it is nearly impossible to kill once it has a couple of defensive boosts. If you couldn't pass it some super easy defense boosts with Scoli or Vaporeon, Espeon would be murdered by every self respecting phys attacker in the tier. Espeon is a perfect example of why a mon (Scolipede in this case) who has the ability to essentially nullify an entire side of the attacking spectrum and then pass that nullification to his allies is simply unhealthy for the metagame.
Also, for what it's worth, Espeon is actually a pretty sweet stallbreaker with CM, stored power, dazzling gleam/HP fighting and morning sun, try it out sometime, no Scolipede or BP needed.
*edit*
Electricstorm252
Option 3 actually nerfs BP quite hard. Against Stall, BP will basically have to lead smeargle and pray that he can get an ingrain off and live (and hopefully disable the enemy lead in the process). I'm sure stall has a smeargle anti-lead that it can field if needed (sableye immediately comes to mind, I'm sure there are others, it's smeargle for crying out loud). If BP leads anyone else, then stall is free to setup hazards and spam roar/whirlwind until the team is dead, and BP can do very little back.
Against offense, which is already BPs hardest match-up, they just lost their ability to setup on every physical attacker in the tier, Scolipede (no, vap cannot do the same thing, gets outsped too much). The fact that BP can no longer do that puts them at a severe disadvantage against offense.