I'm just finishing up watching the final 2 episodes of the season on this show and have liked it so far.
With it taking place in Europe it's certainly something different than most other shows on the big 3 networks in the U.S..
I'm liking the characters a lot and their back stories, that alone would earn it a full 30+ run season for me, just to get to the heart of what makes each of these characters tick.
It has it's flaws too, but I think the good points out weigh the bad by a large margin.
Using the ICC as the base for where the team operates from is probably not the best choice, but this is T.V. and I could think of a whole lot worse offenses by T.V. shows and worse ways to allow the team to cross lines and borders following the investigations.