4) referral commission
revenue means Rs 100 / execution. which means the referrer gets Rs. 20 (20% of the revenue). as far as i know it is 50:50 with other brokers, So, if they charge Rs. 20 / order, they give back Rs. 10 / order. Percentage wise competition is higher but in terms of money, Fyers is high. Is my understanding correct.
5) order types
the leader is a pioneer in this business, so competition does a catch up. with IB, there are many such order types. how about making people getting used to it, so they will never go away from FYERS.
6) API
i am in a deep $**+. Sorry i am of no use to you in this regard. I have found a way to place order without subscribing for the API (legally). Wishing good luck for you.
As an after thought the equaliser downstocks is not able to beat ABCrodha and it does not seem to work. I would think of some thing that ABCrodha cannot do.