Note that ledger is supporting coins for free.

It is up to any individual to create an application for their desired coin to be supported by the nano s. The coins are no longer explicitly chosen by ledger.

If you are looking for a specific coin to be supported, simply create the application yourself (or pay someone to do this) and submit it to ledger.
All they are going to do is to review your application and (given that it is working as intended without any bugs) add it to the nano s 'app store'.