Types 1.1.5 will have a drag-and-drop interface for reordering repeating fields (not groups).
In the next version, we’re going to look at enhancing the field groups. It will still work with Types parent / child relationship, where field groups belong to a post. We understand the limitations of this, but it also seems that many other users are enjoying it.
However, we are planning to make this relationship optionally hidden and transparent. Meaning, if you don’t care for having a container post, Types will not bother you with having to set it up. You will be able to drag fields to a group and Types will handle the underlying container and relationship.
From a DB point of view, we’re happy with having a container for field groups. This makes querying and using them a lot easier more more robust. We understand the issues with usability and will be addressing them.
Types 1.1.5 is scheduled to go out in about 10 days.
The next Types version, with the other changes I’m talking about here, is about 6 weeks away.
I hope this helps.