Anyone will be boring in comparison with Roger. Who else has a more enjoyable game than Djoker now? Rafa, Muzza, Ferrer of Berdych??? His game is less beautiful than Roger's doesn't mean it's boring. His defense is great doesn't mean he defenses all the time. He's the 2nd player to watch at this time. Do you stop watching tennis when Roger retires?
Grigor Dimitrov is a big Zero. He's already 22 and he's still a player for the future. Playing like Roger won't make him become the 2nd Roger.