As a customer, not much going on here. Happy with the 6S. I'll be buying a Lightning-3.5 adapter to see how it does. However, nothing that compelling.
As an investor, albeit much less of one lately, I'm upset by what seems to be a general play of "refinement". The reason for the quotes is that to me, I see the deck chairs getting shuffled. Needing to make Beats worthwhile drove this plug removal, not "courage". Apple will still sell lots of these phones, but you're alienating the wrong people. Apple iPhones are purchased by those with disposable income. Androids are purchased by everyone else, and then some. There's no profit in Android, and that's fine (especially with Google). But removing a port that has such reliability and really is small has now put a lot of people in the position of questioning how "friendly" the iPhone is.
On a personal level, if I were king, this would be an easy problem. The Plus would be widened to once again be a camera-flush body, the 3.5 would be added to that version, and the remaining space would be left for battery, while the edge would return to an iPhone 5 border shape. I'd also make the bottom button go on the back in the same location, allowing the overall length to drop a little.
I don't expect miracles; those don't happen often. People talk about Steve Jobs and how he "innovated". That's oversold. What is clear, however, is that you're seeing the rearrangement of "features" optimised to the company portfolio. It's not necessarily right or wrong, but it is a sign that the company is making decisions based more around total sales projections than it is about keeping its cache as a smart, "it just works" company.
I would rather see more spectacular failures of new features than the removal and "refinement" of older ones. My expectations of Apple, Inc. are officially lowered now.