We are indeed looking to add fixed-odds sports betting this year. It won't be a white-label, we'll integrate a 3rd party odds feed with our own front end.
The reason it is limited at the moment is the amount of manual work involved putting up the events and paying them out. By integrating a fixed-odds feed the whole process can be automated so the only limitation is what events the feed provides.
The initial implementation will not include live events but that might get added later.
I recommend you to add this "fixed odds feature" before May, when the big events happens as: Last matches of euro football leagues, Final Champions League, Final NBA, Euro 2020, Olympic games etc...
