The appointment of Ashok Vaswani as the new CEO of Kotak Mahindra Bank brings a period of uncertainty to an end, but another period of uncertainty may lie ahead as external candidates often have trouble adjusting to the culture of the organization. Kotak's valuation remains at a premium compared to ICICI Bank and HDFC Bank, making it less attractive for investors. However, if the stock falls by 10-15%, it could present a contrarian buying opportunity. Other private banks like IndusInd and ICICI Bank are expected to continue outperforming.