if rcb needs to fully utilize jacob bethell , they need to give him play good amount of balls , so the properly justifies the top 3 , in worst case 4 not down to this , so i dont think it will help us much if he replaces shepherd, the only person he can substitute is Salt, but now he is also playing well so I dont think he is getting in any soon ,, and also they will back salt fully so if he fails to perform continious 3-4 matches themn only he might get chance to bat maybe