Allow multiple Custom "Gateways"

I would like to suggest having the ability to have multiple Custom Gateways. We would like to give customers the option (with different instructions) for offline payment methods such as mailing a check, Online bank transfer (using IN account related information such as Client Number), etc.

Maybe include the text on the invoice itself or create a generic ‘Pay Now’ custom gateway with each of the options broken down.

Is this a feature that I can suggest for consideration?

Sure, you can create an issue on our GitHub project.