Champion ability idea

I was just thinking about minion wave management and I had this idea.

What if a champion could use an ability or passive to change a melee minion into a caster minion, or change a caster minion into a melee minion?

This probably doesn't sound like much, but it could effect the way that you manage minion waves.

With an extra melee minion, your wave will be slightly more defensive, and with an extra caster minion your wave would be slightly more offensive.

This could be great on a champion who has some other abilities that buff minions as well.

Just an idea. If you have any other ideas to add to it, feel free to share.

Also, if anyone wants to take this idea and use it for your own champion concept, I'm completely okay with that. I would appreciate if you would drop a link to your concept here so I can take a look.