Why has Cologne only 3 reinforcements?

I know, that colonge has only 1million inhabitants, but colonge is the largest city of the Rhine-Ruhr metropolitan region with over 11million inhabitants and is one of the largest area in eu.
http://en.wikipedia.org/wiki/Rhine-Ruhr
http://en.wikipedia.org/wiki/Blue_Banana

Why isn't Malta renamed after me?

These questions are important, as for yours I think it is because the country is probably already OP or close to it .