If you have any questions about IX-API in general or on how to implement it, either as Internet Exchange or as a network that wants to configure its IX services, feel free to contact the participating Internet Exchanges at any time.
You can submit proposals on how to enhance the IX-API specification via the gitlab issue tracker at any time. The better and the more detailed the description of the proposal is, the easier it is to select it.
The IX-API board will review proposals and invite the party to work on the enhancement proposed. The party is expected to assign resources to get the enhancement worked into the IX-API specification.
If you have any feedback you want to share, please contact the participating IXs directly. Your feedback is highly appreciated.