Release more data via the API for round robin manager app

I've created my own app for a round robin and tournament manager to display court, partner and opponent assignments, track scores, byes, etc. Currently your API doesn't give me gender or the fact that two people registered as a team. It also doesn't release any data on custom fields. I would like to use this to apply the correct formats to an event (random doubles, partner play, mixed coed, etc.). Would love these fields to be available via the API, thanks.