Sorry I posted a discussion, but I went with twice the amount of characters then the comment section allowed. I'm extremely impressed with the design and the animating work put into these, but I don't think it's ready yet to be put into the game. For a first submission, this is very detailed and well thought out. I think you should have started off smaller though, something this big is complex compared to starting projects like hats. Valve has never added any workshop-submitted buildings, so that might also be something to consider. I'll provide my opinion, which is long, but I was so excited by this project I had to express my feelings!

The models are awesome. The design is detailed and well built, and I love the cute little lights on the El Jefe. I think the eyes look odd, maybe they'd be better as the lights on front of the Sentry. Also I don't think the design of the head on the Big Lug is as nice as the design of the El Jefe, the jaw seems a little boring.

The animations are awesome, that's not my problem with them. But I think it takes too long to complete the animation. For balance reasons, I think it's likely the dogs wouldn't be able to actually activate quickly enough. If Valve sped up the animations, it would probably ruin them. I think the animation could be simpler and shorter.

I already expressed my opinion on the eyes, but I didn't really like the textures. I noticed it looks like you used multiple different colors. I can see a difference between the smaller dog's back and front torso paint. I think it would look better if it was more consistent. Also, I saw some checkered paint on the Big Lug. I think it seems out of place when that pattern only appears on the mini-sentry.

My big problem though: I didn't see what it would look like on the Blue team! That's really important.

Overall, I'm super disappointed to down vote this. BUT I want to see a version 2.0 in the workshop in the future! After you practice more, I'm sure you can make this much better, and I'll be super sad if you don't. If it helps, there is a forum where experienced item makers meet & critique each other. You might have already seen it, but it's on a website called Face Punch. I'll leave a link to the most recent thread here[facepunch.com], but I think you need to make an account on the site first.

Please keep working on submissions, you show amazing potential. I'm going to keep looking for more work by you, and hopefully you'll consider my ideas if you ever decide to reinvent this in the future. Thanks for spending time to read this. -Noob