To make maps suprice players more , it should be more ways to hide Emitters .
Now we can use some objects and Towers to hide the Emitters ,
but walls should also be abel to this , then the maps should be a littel harder .
Then we dont have to use Towers/objects to hide the Emitters .
This map might give you an idea of what im talking about :
I'm not a huge fan of these kind of 'surprises'. Most of the time it just means you have to start over again because an artifact was hiding an emitter with a long delay. Second time you know, so the surprise is gone. Doesn't add value to the gameplay for me.