Kids aren't the target audience for the series. The trailer is the best of the footage at that point, and what continued afterward left heads shaking. Being called the best of what was done is reaching to compliment something that doesn't deserve it. It isn't good enough to stand on its own, wasn't from inception. Disney loses nothing in releasing this- it was George's pockets and landed with D when he reached out to them.
If watching, just don't mistake the release as a rider as any sign of confidence or care as to the quality; it only remains to be seen if they carved content down to the two concepts that were remotely appealing.