I think you can have a good chain line and an unramped track style chain ring and still run into dropped chains pretty easily on a 1x8 with no chain watcher or guide.

While improving the chain line will help, I think you should get a chain watcher or use a cable-less front derailleur with its limit screws clamped down as a chain guide. 1x8 1x9 and 1x10 systems all seem to rely on some safety guard to avoid dropping the chain off the front.