The logo will be displayed primarily on the website where it willhave only a small amount of vertical space, so the logo should be clearly visible without losing detail when it has little vertical height.
A simple logo is entirely acceptable.
To give some examples of similar organizations which I believe have strong branding (including logo):
* The Guardian
The colours can be suggested by the designers, and I would be interested in seeing both the coloured version of the logo, and a white version of the logo on a coloured background
If I was told that everything goes perfectly well over the next five years, and then I get asked what that looks like, the answer would be that we are covering news in several European languages on events across the continent (including non-EU member states)
If in a moment of absolute creativity you come up with a better name than EU Scoop that is available with a .com domain, feel free to provide a logo which uses it. It might even give you an edge, although that is not strictly speaking part of the competition.