Here's the deal with this. I listened to some of the key parts that people said were weak, and here are my observations.
1. The kick doesn't need to be any louder. Don't touch that notch. Don't even think about it. You know why? Because this is not hip-hop, this is not drum n bass, this is not dubstep, and this is not techno or dance. In electro house, I've noticed that a kick that has a nicely tamed volume is better than a stronger, overpowering one. If not using fantastic equipment, the kick could easily overpower some of the other more important elements in the song. So with that being said, keep it as is.
2. I love how the synths work together and don't overpower each other. Everything has its place. I love that. You did a beautiful job. The lead synth is not too quiet. It wouldn't hurt to slightly turn it up, but make it any louder and it's gonna distract from the other instruments in the chorus. Since the chorus is gated heavily, making that lead louder is going to do more damage than good. Sure, turn it up a notch and see how it compares, but the way all the other instruments are leveled, it might make for disaster. I think the way you have it now is nearly perfect.
3. Now about that gate for the chorus. The hi-hats are not what is getting lost (because hi-hats that have atmosphere in an electro house song are key), it's the gate/kicks. Somewhere after the beginning, there is a slight tempo conflict with the gated and the kicks. It's very, very slight, but it's enough to raise an eyebrow and make someone question what's going on. The kick seems like it's coming in just milliseconds too late, or the gate is taking effect milliseconds too early. Depending on what program you are working on, you can easily zoom in and see about mistimed instrument loops/melodies that don't correspond with the other objects. That's an easy fix.
4. One quick thing is the glide the lead synth does between the two notes. It's a little too slow. Find a way to quicken the transition of that glide (which is a really nice touch!), and see how you like it. If you don't like it, revert back to hat you originally had here.
4. Overall, other than that thing I mentioned above, this song is gold. I can tell that you spent a lot of time doing this-- you didn't rush. That's always commendable. Details are key, and the mastering is spot on. In a song like this, nothing should overpower anything. Very nice work here.