Thanks for sharing the screenshots! The fullscreen view looks a lot cleaner, will look forward to the updates. For monolingual dictionaries, I'm always using Yomitan's ability to look up words within definitions.
Yes I've also just started adding sub-word lookups for ranges inside of the headword and for words appearing in the definitions. I hope to launch that together with Yomitan dictionary support. There is a lot packed into this next update...