In particular in a magical world, are inventions based on machinery or anything non-magical welcomed or considered to be an aberration? Where do your inventors find their ideas? What support do they get?
Do your inventors regret anything they've come up with? Are they rewarded for their inspiring ideas? Do their inventions come with a price? So many developments often have high prices in terms of lives lost and so on (I'm thinking of the navvies who carved out railway lines and tunnels, just how many of them died doing this?), so what would the prices be in your fictional setting?