The speed mirage was well executed, but I wish they'd used it on another metahuman. Dr Light is an energy blaster! Area blasting is her thing, she's been doing it all episode. She even uses it once against the initial mirages and knocks him down, but then suddenly she decides to try to fry all the Barrys one at a time? Poorly written. Against a charge-straight-ahead brute like Atom Smasher, or a single-shot one-trick pony guy like Cold, the mirage would have made a lot more sense. I know, I know, overthinking the comic book fighting, but this one just bugged me.
Nice to see Cisco out of the closet. I was afraid they'd let that go as long as the whole don't-tell-Iris thing. Now we've got don't-tell-Patty that makes absolutely no sense - she's already in danger as a cop working with Joe, and keeping her in the dark requires ridiculous numbers of hoops to jump - and I hope they get over that one pretty soon.
My first thought when I saw the girl on Earth-2 was "hey, that's probably Joan Garrick" but then they made it Wells' daughter instead. (And you never know, she could still end up filling both roles.) Either way, it's a loved one for Zoom to hold over someone's head. It says good things about Tom Cavanagh that he's utterly believable as both versions of Wells, really glad he's back.
Hooray for Hawkgirl making an appearance already! Not sure it's really necessary to make her frightened of meeting metahumans before she ends up with wings, but hey, whatever. In the comics the Hawks flew with technology (if you can consider Nth metal "tech") but had weird mystical connections to past lives, so I suppose she might end up superhero-ing without actually being a meta, and maintain her dislike for them. That could make for some nice intra-team dynamics in the Legends.
I ran across a Killer Frost picture the other day. She'll be back sometime this season.