will the devs have an option for a debit card? Maybe with time but probably not in the beginning I think. Anyway, let's see how the people will react when the project goes live. But adding a debit card could speed up the process.
As per as my knowledge they have provided us the option of debit and credit cards for payment. I have seen this option in their white paper. But using any other payment method is quite costly rather than GOtokens. and most importantly we can save money and get more benefits by using pay services of GOeureka.