Great to see other projects to be build on the Steem blockchain!
Here are some of my initial thoughts:
Internationalization: More important than the language for UI is language for posts. The blockchain allows that the language is marked in the metadata, but AFAIK there is no standard for it. Please do it so that other UIs can use the same method. It would suck really bad if UIs wouldn't have the same way of telling the language of the post. Because Busy is probably the first UI to implement internationalization, you have kinda responsibility to also think a little bit how to make a standard that everybody can use in the future. ISO 639-3 contains all natural languages, so it's very good tool for this purpose.
Favorite categories is really important feature. We need to let users to subscribe to tags and not only to other users. It's necessary tool to help building better communities. Following famous writers doesn't create communities but following a tag will create.
Remittance business is not going to be easy. Biggest problem is how people can send currency that they have and let the receiver get currency they can use in their country. Steem doesn't solve that problem. I'd suggest you will forget the whole remittance market unless you have some serious business partners who have experience with that business.
The message is quite vague. Too much buzzwords, kind of hard to understand what you are really doing here. I know you are legit, but I've seen so many overhyped projects that I'm little bit allergic to them. Don't be surprised if some other people won't take you seriously. Start with why, don't focus on explaining how cool the tech is that you are using.