Attention = Inner Focus for those that didn't notice ^^
Anyway, let me think real quick, then i'm going to edit this post...
EDIT: Ooookay... Let's see:
Crobat looks good... I use Roost instead of Bite, but i have other means of using Dark moves... So you can keep it if you want...
Gardevoir also looks good... Movepool is nice, and in my personal opinion, synchronize is more useful than Trace... Sue me...
Lucario well, if you're using the physical one, you might wanna grab a "Heart Scale" and teach it Power Up Punch... It's not the best fighting move, but the +1 attack is useful... Also, it has a lot of PP... Although using Swords Dance and Power Up Punch at the same time is not the best combination... Maybe you could give it a special move like Dragon Pulse, if you're not running a Lucario with -Special Attack nature... for coverage only...
Houndoom looks good, but i'm going to suggest something: You already been to the 7th street right? Well, with the new sleeping mechanics, i don't think Early Bird is useful, so find an Ability Capsule in the 7th street, and change that ability to Flash Fire. An immunity is always better than a resistance...
Mamoswine well, you can't get Icicle Crash since Beartic is not available, but you have Earthquake so yeah... You can keep Strength for now, since there's not a lot of useful TM's for now... Apart from that, i don't know... Teach it Facade? I think someone else can help you better on that...
Both Galvantula and Kabutops are useful cuz they give coverage that you're team don't have... I wanted to recommend Jolteon, but there's no tutor to teach it Signal Beam, so Galvantula is probably better for now...
For a water type, there's two things that i can recommend for you - First, Gyarados the destroyer of everything, the power, the thing that kills everything in sight, the DESTROYER , although Gyarados moveset is not good right now, it can still hold its on because of it's huge attack... It could work in an awesome way with Mamoswine, since Earthquake doesn't hit it...
And for another water type, i can recommend Azumarill, which is also a power house... I know you have another fairy type, but Azumarill doesn't care... And i know that you have to breed it to get Aqua Jet, but Azumarill doesn't care... Azumarill is POWER, that Huge Power is going to destroy everything, and Azumarill has awesome coverage... You might have a fairy type, but you have to consider Azumarill, ALWAYS... (Talonflame and Blaziken cry when they see Azumarill on the field...)
Well, my memory is playing with me right now, so i don't remember a lot of other stuff that i can recommend... If i remember, i'll make another post if it's not a double one...
Good Luck o/