Thanks to the efforts of TaurusBullba and now the_scotsman, we've recently updated most of the operator logos and country flags. It was a big job, as there were literally hundreds of images to be normalized. But now, most of the logos and flags are larger and are similar in sizes, which makes for a cleaner overall feel.
That said, some logos and flags are still not right. Please report any problems here and we'll work on them one-by-one.