There should be a repo with various example data packs to show how Commander can be used.

A few examples with Andromeda's Config Expressions would be pretty cool too. (← a hack)

• Show off a few events.
  • Server lifecycle
  • World tick
  • Attack block
  • Use item
  • Stop sleeping
• Json commands
  • cancel is pretty crucial
  • some basic control flow
• Brigadier commands
  • cmd:data
  • cmd:explode
• Expressions. This one is pretty complex, so idk.
  • Config Expressions
  • storage (probably the most useful one)
  • Use in loot tables

There are many more things to show, but this should cover the basics and get the wheels turning.

The dev wiki doesn't need this, as it's hopefully explained well enough. Also, Andromeda and Good Tea are sample projects.