Raging hard right now. After clearing route 7, I had the choice between two cave entrances, chose the bottom one, then accidentally ended up on route 8 (I assume I was supposed to take the other entrance), where my next team member awaited. Unfortunately, it seems to be by far and away the rarest denizen of the area. I have been looking for, no joke, an HOUR for a Mienfoo, and only found one with Inner Focus. Nope, it's Regenerator or nothing. Of course I caught everything else in the area (all I'm missing at this point is a Zangoose and a Taillow), but still. Getting really frustrated, so much I started running away from everything to make the process go quicker (that and backtracking to Camphrier Town every time I need to replenish my Venusaur's PP is incredibly tedious at this point).
Current team: L37 Blaziken, L37 Venusaur, and a Mienfoo that's still in the wild... somewhere.
Edit: Not long after writing that last part, I found two Mienfoos back-to-back, the first one having Inner Focus, and the second Regenerator. With a Jolly nature. I'll take that one, thank you very much. Thanks to the progress I made in the Battle Château, I became an Earl, which caused some evolved level 25 Pokémon to appear there... excellent experience for Mienfoo, which I put in the front to get it the full experience. Half just isn't going to cut it when you learn your first STAB move at level 29. So now I can properly move on to the cave past route 7, which I just rushed through to get a Mienfoo. Blaziken is closing in on level 40... it's probably STILL not going to obey me even when I get the next badge. Feels like a dog chasing its tail right now.
Current team: L39 Blaziken, L40 Venusaur, L25 Mienfoo
Edit 2: The Battle Château is crazy good for getting some levels under your belt. As well as some money, I now have 130k for crying out loud. At least Mienfoo learned Force Palm, it'll make the going a lot easier. I caught everything I could in the Connecting Cave, so now all that's left for me to find in the Central Kalos Dex are Spritzee and Swirlix (as well as the starters I didn't pick, but oh well, that'll get taken care of later). I honestly couldn't find a Spritzee for the life of me (which means it's common as hell, judging by how some of you guys have an easy time finding stuff I can't). I made it to Ambrette Town, which is a nice place to call it a day.
I forgot to mention, the output from the berry farm is absolutely crazy, which it better be considering how high maintenance it is. I mean, on top of watering the plants, you have to keep weeds, Spewpas and assorted bugs out of the way. Dang.
Current team: L41 Blaziken, L41 Venusaur, L30 Mienfoo
Edit 3: A bit of trivia for those interested: the demo that was showcased at many events before launch featured a heavily modified version of route 4.