About introducing strikes at interval of 50, we as Zerodha had protested to this and as we had thought, the liquidity is getting distributed with the new strikes rather than bringing new volumes which is bad for the market..
Bid ask spread would be wider and slippage would be more when slowly liquidity is getting distributed with the new strikes. It is a bad move for intraday option traders (mostly buyers).
Such strikes at interval of 50 will help option writers more. Option writers are generally high net worth investors and traders. Option writers already have high probabilities of success than option buyers. Surely a bad move by NSE for option traders.