If Splinterlands devs support this open standard, this could work very well on top of their referral system.
All they have to do is, passing the custom_json object by, when an account is created.
If a Splinterlands player decides to get social on a HIVE interface, everything is set and Splinterlands create an extra income stream while they would act as a creator and provider.
Ok, we hope someone from your team will negotiate with the Splinterlands team)
Since it's an open standard - anyone can make use of it - without any permission.
I'am sure they will be interested - maybe not right now, since they HIVE migration will take their full attention.