My young daughter just doesn't like the HS headliners, and isn't into Star Wars, so I'm not sure I would pick it. They are also temperamental, so if a couple are down, it will make the whole thing crazy crowded.
The rides we actually like in HS don't need special access, Muppets, Frozen, Aliens.
The character photos are sometimes, but not always, open for after hours. That seems to be all over the place. Sometimes they swap them for other people, or just don't have many. If your little girl has to meet princess, and they're not out late at WDW, not good. We don't know how they are going to do characters at these new after hours events. The current, deluxe hours have no characters at all.
No way any event in Disney is going to have 15 minute waits. It's just not going to happen.