>>32808513My locations vary based on the nature of the work, often paralleling a certain theme I'm going for. This may be related to a Gym Leader, a specific area of interest, or important character to the plot. It becomes my duty as author to make the city, town, or place their home. The progression in my series went along fine for as long as it did by using a limited number of towns and cities from the games in addition to various connected islands. Ultimately there were several areas of importance along the way, and each of them may feature a new type of theme. Examples to highlight, Vermilion, the largest port with a military background from Surge, Lavender, the paranormal based on the ghost, Goldenrod, a cultural epicenter being home of the iconic broadcasting tower.
I say all of this to compare it to my next story which originally features Orre, however certain events take it beyond the sparse region. My ambition is not to design an entire region, but instead to layer an existing one with new life.
>>32809702My advice is start with what they do. Do they only sense aura? Are they also there for balance or serve any aesthetic purpose? From there derive a term to call it. Doesn't have to be too fancy, a descriptive term different from basic biology suffices. Make it relevant to the species and you're good. My fiction examples, Gardevoir's crystal = heart shard, Sneasel's feather = crown feather, etc.
>>32810977Moves are relatively easy to invent. I don't tend to do it unless there's an opportunity that allows for something more creative. Kinds of Pokemon as well, Shadow Pokemon are the first thing I think of. Mega Evolution, allowing a different species from the Mega Stone to overtake the the evolving Pokemon.