NICE map. The flow is really good and I love the small location. Makes me realize that the map I intend to do may need to be upped in size so it doesn't become too crowded too easily.
I will however say it feels like it needs a third tier. There's currently two height levels and it feels like it needs a third one, cliff-wise. Either in a separate area from this one (as the balance and flow is really nice) or in a bigger version. I assume from the name you intend to make a bigger variation. But it's great for when it's just you and a couple of friends, whereas many maps often get voted away from because of their size on servers. I do wonder what it'd be like with the huge 8 person games we get nowadays.

Got some bugs/things to mention.

Visually, this is a bit blocky and I'm also concerned about the engine getting you stuck on an edge. Perhaps some player clipping at least?

I felt I could climb this. I couldn't. This saddens me.

Either shorten it to climb up or add a little platform for it? Or just take it out entirely, also a possibility. but this feels a bit wrong for me.

Picture says it all.
I think that's it for now as first impressions.
As for the wagon, definitely move it away from that slope there. That's dangerous. O_O