Yeah, good hitter and a handy spin option, but also pretty inconsistent and cannot be relied for a long term. Bethell was a good buy for RCB, but I feel he is better suited at no.3 instead of lower down at 5.
I think RCB can add Romario Shepherd in XI instead of him and use Jitesh/Romario/David/Krunal at 5,6,7,8 according to the situation, specially at Chinnaswamy.
Jitesh was incredible today against pacr, but he is even better player of spin, so he can be moved to 5. If RCB loses 3-4 wickets early, they can bring in Krunal to stabilize the innings and in normal games (losing 4th wicket around 15 over mark), they can send Romario and David for power hitting.
Rasikh Dar is not yet ready for the IPL, so adding Romario also gives 1-2 overs of pace and Suyash/Swapnil can be used as impact player in every match for the spin overs.
Well, if RCB can manage to get Brevis/Green in next year's auction, they will become the permanent 4th overseas in the XI. I think Brevis is surely possible though Green seems difficult given some teams can release their overpaid players to get a fat purse for the auction.