Since you mentioned your english in your signature, I just thought I'd share some wisdom imparted on my by one of my english teachers, because I used to have a similar problem with my formatting. He said parenthesis can almost always be eliminated by re-arranging your text, and while it may make it a bit longer, it makes it far more readable. Parenthesis are structure shortcut and should be used sparingly, no more than twice a paragraph if possible. Generally, people try to use parenthesis to indicate conversation pauses or excerpts from the general flow. This can be reformatted with commas, and then once you have the commas part down, you can reduce the number of commas by changing sentence structures.
For example - not perfect and I left one detail out, but you get the picture:
Well, George Haikalis, a Greek-American civil engineer / transportation planner, is apparently influenced by the ideas of Constantinos Doxiadis [wikipedia.org], a now famous architect and city planner most recently noted as master planner of Pakistani city Islamabad. Constantinos proposed closing our old Airport in Athens for decades and relocating further from the city center, and when it finally happened before the 2004 Olympics, with an additional express metro rail link, the result was much more efficient and contributed to our tourism-heavy economy. Many Athenians, if not most, were against the new airport and closing the old one, but now everyone agrees that it was the right thing. Due to its good location, the old airport's area inside Athens is now the biggest free zone for city development in Europe and looks to hopefully contribute a few billion billion Euros, something Greece desparately needs right now! The key was the express metro rail link between the airport and Athens center, something George Haikalis surely used many times - if Athens can do it right, NY can do it better.