I think Netflix made some mistakes on their journey (that whole "we're splitting our streaming/dvd business in two to help the consumer" messaging was particularly stupid) but their transition into original programming seems necessary to me, and it's paying off.
As a subscriber, I wish Netflix was as good as it was 5 years ago before Hollywood wised up, but given Hollywood did wise up not sure I can recommend a better strategy for Netflix than what they've been doing even with the benefit of hindsight (my only real criticism is they seem to focus on big prestige shows instead of cheap comfort TV like reality shows.)
Some of their "unscripted" content is already out: Terrace House, Ultimate Beastmaster, etc.
HBO is a premium product, you pay for it in addition to cable. Netflix is an all in one product, you pay for it to replace cable. Don't try to be HBO, be every cable tv station.
All this Netflix talk makes me wish I never ever tried to "play" the stock market with Netflix. I learned a very valuable lesson thanks to them & Amazon. It's called buy & hold on companies you use & love. Needless to say, overall I agree that they've ran their business extremely well. That whole dvd/stream announcement is hardly a distant memory. Also they deserve credit for listening to their customers & trying to fix that pretty immediately.