I've played Blood Gulch a lot and I know some wrong parts here. (Even though it's still good for this to be built in Blockland)
1. The Blue base's cliff entrance is poorly made, the top reaches as high as the rest of the cliffs, and it has a bit more of a slope to it.
2. The base's are bit bigger than what's shown, and they don't show their "baseplate" under them, and the stairs are too big. They were walls, not railings.
3. There were atleast 6 rocks around blue base and 2 trees.
4. The terrain needs to be bigger and most of them were small hills, not just stuff you can just walk up to and get sniped before you even touch it instead of being able to hide behind 'em.
5. That big cliff shown on the right is also poorly made, there was a a part of the rock that would go up and looked liked it was a point rock, and the cliff was smaller in length.
6. The cliff-side on Red base is definitly poorly made, it was not that wide and it has a slope to it on the side, and it actually hooked up to the cliff sides.
So, even though I see many wrongs, its still very well made for being in Blockland.
Its just the duplicated walls that are not right... :/