The map looks very barebones, and doesn't give off the feel of the original map. I, personally, think that this map needs a massive detailing pass for towers and a 3D Skybox to feel passable.
Also, Splatoon maps are based off Splatoon mechanics, which TF2 does not have, making it harder to enjoy a map like this.
Overall, I think the map designer needs to do a bit of detailing and editing to make this map passable, much less decent. However, what is there is still amazing potential, squandered on a ridiculously open, sniper-attracting, floating mess... this is not Moray Towers.