Baton Pass isn't just for escaping Pursuit, but also scouting. Toss out a Yawn, then Baton Pass to see who your opponent switches to. There's also Baton passing a Petaya or Salac berry boost on a VoltTurn(Pass) team; Greninja certainly likes a boost, seeing as it can't boost on its own.
Tossing ideas out:
Charm can also force a switch - I generally see alot more physical attackers this gen than special attackers. Reflect+Charm would effectively cut a physical attacker to 25% damage, effectively halting a physical attacker's momentum and even if they switch Reflect is still up. That's 2 move slots, though, and I haven't tried that out myself yet, might by gimmicky.
Morning Sun is slightly more reliable this Gen with weather nerf. Megazard Y offers some synergy there, boosting Morning Sun while Espeon keeps hazards off.
And there's Trick. For surprise factor anyways, most mons that Espeon faces don't appreciate being tricked Specs or Scarf.
As far as BP teams go, Espeon is still a key part and they're still viable. Scizor can remove hazards which BP teams couldn't do before, there's good Megas w/ BP like Medicham and Mawile, Mr. Mime is now part Fairy. Espeon doesn't even need many boosts to do serious damage w/ Stored Power.
And there's also Kee and Maranga berries. On a predicted Physical hit, switch in a Kee Berry holder and your team gets +1 Def, and ditto for special attacks and Maranga Berry. Reduces the time needed to build up defenses on a BP team and Espeon's Stored Power.
Of course, Espeon's a pure Psychic type, which just flat out sucks this Gen. There's almost zero offensive or defensive synergy that Psychic type offers this generation. Dark and Ghosts are very common, and the Fairy type pretty much makes Psychic redundant. Espeon's got some neat tools, but the typing is a huge hindrance, as there's nothing to switch into except predicted status moves or some weaker neutral special hits. Hopefully GameFreak will give psychics a much needed buff somehow with X2Y2 or whatever the mid-gen release is.