So, I personally would also love to see this service extended to other casinos as well, but like we all know, the service is just starting here and with Stake, the kind of success they record or achieve while providing for Stake users might be the determinant to whether they will extent same service to other casinos in the near future.
It's good if Poorbot do it in the future. I checked in the gambling section that there was a list of casinos
[1] that had exchanges integrated into the platform. Poorbot can use this reference to expand its business to several platforms that are not available exchangers but are quite well known on this forum.
1.
https://bitcointalk.org/index.php?topic=5282289.0