Can't promise on any specific feature implementation, but like you said, you can always build yourself. The code is pretty straightforward in the way it's structured, and they're pretty similarly structured on both iOS and Android sides.
There are two ways you can go:
- You can just fork Jasonette and build your own modules WITHOUT merging into the root repo, in which case you can just do whatever you want with the code and don't have to worry about the main repo.
- Or you could contribute to the main project by sending a PR. (Of course this would be awesome)
If you want to go the route 2, that's awesome. But before jumping in, I recommend first thinking about how to express them in a JSON markup that works cross platform. When you come up with one, please post it to https://github.com/Jasonette/Jasonette/issues so we can decide if the markup can be improved. From my experience, coming up with the markup is the hardest part.
Once the markup is decided upon, the implementation wouldn't be that hard (as long as you already know what API you'll use to implement those)
As for the examples you shared:
- I do think drawers could be a good addition since a lot of apps have that UI both on iOS and Android.
- I'm not sure what the "proper picker selection wheel" would look like on iOS and Android. Would be nice if you share a screenshot of what you have in mind.