Clio is not the real problem, because this way or another there just have to be one car that dominates some races/tracks.
And judgining of my recent 650PP Suzuka experience with EU servers, outside the "Clio Cupe races", Clios are now weapons of choice mainly fror newbie drivers and those individuals who wants to win without compromise.
However, every day there are more and more drivers who drive Suz with F430, California, M3 and even Viper, providing very competitive enviroment. M3 is especially intresting car in this phase, since it can compete with F430 with no problem and own it as long as it driven by good driver.
And for the Clios - from 5 races I drove yesterday only one race had a driver who can actually drive the beast with sub 2:06 lap times. In all other races I had no problem in owning every single Clio driver with my F430, and I'm not such a great driver since my average lap is around 2:07:500.
So, no real problem there - if it isn't Clio, it would be F430 or M3 or whatever. There is always someone or something better, that's the way life goes. Good thing is that Clio is nothing but "just another car with good grounding" as long as it driven by average drivers.