I think this is the worst map in the game. Reasons why:
1. The turrets have no business being where they are, they are basically blinded because of all the crap in front of them.
2. The weather on that map makes it dreary and just bad, its like a green Wetwork, and the weather on Wetwork is usually what people hate about it.
3. In my experiences it is so easy for one person to just lock an entire team into a corner with 3 frag and an M16 on that map, and its fairly easy on other maps to do that, but Downpour has been the easiest in my experience.
4. There are no guns that are really appropriate for this map, there are too many obstacles to use snipers or assault rifles effectively, and there aren't enough buildings that people go into a lot for sub-machine guns and shotguns to be effective
Just thought I should get this rant out somewhere and this was where

I have no idea what you mean by number 3.

The map is close-medium range so SMGs and ARs work fine.
I don't like the weather either, but it's not unbearable.
Both turrets have views of the center metal-sheet building and more, how much are they supposed to have? Also, turrets aren't that great except for taking down choppers.

If you can't use any gun effectively on this map maybe you just suck

I can use guns on this map, none of them fit the way the map is designed though. What I said in #3 means, that one person has the ability to lock the entire on team in their spawn, and its isn't that hard, it's much easier on this map then it is on others. And yeah the turrets have a view of the center metal sheet building, but they are basically blinded as to where you fire, one is looking directly at a wall, so all you can do it hope and pray you hit someone with it, and the other has the same problem, except you have a small window in the building to try and see who your shooting at.

I actually agree with what you said. It is a dire map.

This map is not one of my favourites but I reckon I got some of my best kill streaks here... there's lots of obstacles which makes it great for ducking and firing, then moving on.

i actually quite like this map. i normally play as a stealth class. MP5 with silencer, UAV jammer, C4 and extreme conditioning (dead silence isnt needed because the noise of the rain covers the sound of moving). its great to make a kill, dive into the long grass, wait a while then spring up and knife someone.

but i can see where you're coming from with the turrets, but one person lock down an entire team? if that team is stupid enough to keep running through the same chokepoint then they deserve the raping they'll soon recieve from doing it. but one person can very easily get outflanked and outnumbered and thus killed.

I hate this map as well. Everything is just gray and green, it's rather dull. Because of this, all the grass, and the inclines, it is very hard to spot people at a distance & I'm constantly missing ppl (visually) because it's so easy to hide. And the turrets are *bleep*ing annoying. Damn sprayers...