It should be intersting to make an hub with our customs libraries for PHP macro or Groovy for example. Something like an folder and we put our php files(libraries) in it, then we could freely use the function define in the php file in all workbook. Same for Groovy and JS.
To go further, make a workspace for users that could share libraries and help them each other.
It's really boring to redefine some function again and again.
Thank you for your great idea. While we cannot commit to a specific target version, we will consider adding it to our future internal backlog. If you can add further information about the context of this feature, please add it here so we can evaluate it more fully.