Your comment made my day, thank you! I'm really glad to see my games resonating with players. It's a big motivation boost.
And yes, there will definitely be more metroidvanias coming from me in the future.
For starters, I do plan on entering the "Metroidvania Month" jam next week. It will be my first game jam in more than a decade, so no idea if I can make something good during such a short time with my busy schedule. We will see!
I've also been toying with a sequel for The Trespasser, tentatively titled 'The Fireseeker'. It's still very early, but it should be a bit more Metroid than Castlevania this time.