The Google Logo to my mind appears a bit clunky and dated now. I note that it has been around for some time and I'd like to see something different, but what would you replace it with?
If it aint broke dont fix it,why change something just for the sake of it,if you look at the google search page its as basic as anything but it works.
One does not change the logo too often... as it becomes your identity. The changes to be done, if at all... has to have a very strong reason behind it, as it would involve huge cost in advertising and promotional activity... just to inform the masses of the change! Regards, RightMan