1. Yes, we plan to add files module as well with some integration for previewing in browser. Google Maps is already used to location field and showing static map, we'll add more complete integration of Google Maps or maybe someone will add 3rd-party module for it in the market.

2. Hashtags are already there - #hashtag, mentions tags are coming in the future versions.

3. Please describe it in more details, it's not obvious what you mean exactly ?

4. There is page builder for almost any page, you can insert any JS code from ad campaign to almost any page.