Couple to add to your current players list, who history will judge well; Chanderpaul and Younus Khan...
Steyn, Amla, De Villiers (though all could be considered contemporaries of Bell, KP and Clarke as they started around the same time...). Agree re; Cook and Kohli as stand outs at the mo...
IN terms of younger players coming through;
Aussie bowlers Bird, Starc appear to have a lot of potential. Pattinson is he can stay fit.
I like the look of Trent Boult, Azhar Ali, Joe Root, Shakib Al Hasan.
Players I really hope kick on, for the good of competitive test cricket - Kane Williamson and Rutherford (NZ), Khawaja, Warner. I also hope this Robson kid at Middlesex opts to play for Aus, as he won't get close to the England team if he's an opener. The Aussies should be looking to pick him to test his allegiances.
I really hope the promise the Windies are showing continues; Darren Bravo and Narine have a lot of potential and for a totally left field one, Kyle Jarvis of Zimbabwe; provided they get the opportunities to play more test cricket.
Hopefully this will spark some debate!