I know this says GitHub but hear me out .

Request:

The ability to create a top level Job that finds all streams that match a wildcard spec and create seperate multi branch subfolders for each stream.

At the moment the Organizational Folders job option can do this for a GitHub tree.

Example streams:

//product1/main
//product1/rel1
//product1/dev
 
//product1/main
//product1/rel1
//product1/dev
  

Specify P4Server and wildcard //product* then build 2 folders each containing their own multibranch tree for that stream.

At the moment you can create one multibranch job with an include spec of //...:

and it will find all Jenkinsfiles under each stream and create jobs but they are all in one folder and performance will suffer if you have to scan every stream on a whole server when you rescan the multibranch pipeline.