Really? I think there are heaps of cool players left:
Fed - Obvious reasons, surely this year is his destiny. Will be ridiculous if he doesn't win.
Monfils and Tsonga - so ridiculously extravagant and temperamental that they play entertaining tennis
Gonzalez and Murray - high quality tennis, lots of winners, both made grand slam finals in the past.
Roddick - Genuine hilarious guy
Kohlschreiber - Promising talent
Haas - Won't win, but is so ***y
I am actually a Davydenko fan (though I like a lot of the top 10 tennis players atm, one of my favourite times watching tennis) but I understand why people don't like him, so fair enough. Still the funniest moment ever was watching Davydenko vs. Nadal at the Rome Masters in 07, with the crowd chanting "DAVYDENKO". The most boring man in tennis had a stadium cheering him