I searched through 17 pages of threads and couldn't find one devoted to this, so if I'm doubling up I'm sorry. That said...
How would you see a PoP/Etheria mini sub handled?
Which ever characters aren't slated for the main sub?
Filmation characters like Madam Razz and Dylamug?
Concept characters like Josh and Bubble Carriage Girl?
Vintage Toy versions of characters like She-Ra and Catra?
All new characters, like Draego Man for PoP?
Or some combination there of, or something totally different?