It's now oficila that the CPL(pro league) will have cs:source has their main game on the next years summer comnpetition, this basivcally menas that cs 1.6 professional days are gone, and that cs:source now is the main game
but it seems like the CPL and VALVE are working together to improve the game in terms of competition, so many old skills maybe back, like wallbang and bunny hop.. just have to wayt and see