Try sending it to dev@spark.apache.org (and join that group)
You need to raise a JIRA for this request plus related doc related
Example JIRA
https://issues.apache.org/jira/browse/SPARK-42485
and the related *Spark project improvement proposals (SPIP) *to be filled in
https://spark.apache.org/
Thank you, Yangjie.
Yes, instead of switching, it will depend on the Scala community's promised
compatibility completely.
However, many other difficulties still arise from the 3rd-party libraries
like Ammonite. Scala 3 might be better in long term perspective.
I'll send another email about the c