Is your feature request related to a problem? Please describe.
Currently there is no easy way to configure the payment method titles for non developers. They are all configured in config.xml but no adminhtml configuration is provided via system.xml.
Describe the solution you'd like
It would be nice to have the configuration available in the adminhtml so the customers can change method titles themselves without a developer having to set the config via CLI.
Describe alternatives you've considered
An alternative would be to not use the Magento configuration at all but rather use the title provided by the adyen backend response.
Additional context
Might be realted to #2854.