In all honesty, I've never been all that interested in trainer journey RPs. After my six years here I find them all to be pretty similar, and they don't particularly excite me. But that's just my own personal opinion.
Either way, I stress the fact that I'm thinking low-maintenance, as in if you go on vacation for a week, or are busy, you won't be far behind or lost when you get back. Ideally, players can just run around and explore on their own, join up with others, leave, get caught up in small adventures and so on. The main idea is KISS: Keep It Simple, Stupid.
As I've said, the ideas I've been tossing around my head were simply RPers playing as Pokémon, exploring a world and interacting. For instance:
-Just wild Pokémon across ____ region. Maybe some belong to trainers. Maybe some even belong to Team ___ members. Maybe some are hybrids based on what their parents were.
-The setting is a café or inn, owned and occupied by wild Pokémon. They interact, they have a good time, they tell stories and legends, they deal with trouble.
-The world is occupied solely by tribes of Mew - the creates that came before all the Pokémon species we know now. Every Mew is different. Some look like Pokemon we know today, others look like a jumble of Pokémon, others resemble nothing familliar to us. They live in tribes based on their typing. Yup, it's just an RP filled with different types of Mew,
running floating around doing stuff, dealing with threats in their constantly-evolving world.
I would honestly love to run any one of these RPs, I just don't have the time these days. But that's the basic gist of what I'm thinking. If anyone wants to build on one of these ideas, go for it.
Aside from how Psychic is obsessed with Mew. XD