There is literally nothing Apple could do to stop this culture of negativity. No product will ever satisfy the incessant neediness of people who call themselves fans of the company.
And profits continue to flow, stock prices stay relatively the same, and normal people keep buying Apple devices.
I think this would turn things around:
1. 13" Air 8gb / 256gb w skylake, Retina display, usb-c tb3 instead of the tb2 port, keep magsafe and 2x usb-a, $999 price point
2. mac mini at $499 w skylake, 256gb blade ssd, user replaceable ddr4 memory
3. TB3 display at $499 w integrated dock for macbook and macbook pro, 1440p is fine, no need for 5k, compatibility and price trump pixels, use the same panel just trim the bezels and thin it out to match iMac, drop the damn price, it'd be a hit.
4. New mac pro as modular design which can be upgraded over time, snap-in logic board, processor, memory, video card, storage. So you buy the container / thermal unit as a base and then add/upgrade anytime you want to latest specs, with some dependencies (memory and processor must match logic board family but storage and gpu selection should be a standard backwards-compatible option. Serious pro users are willing to pay the apple tax and want 5+ years of use with upgrades rather than 3 years and throwaway. Not that there's any upgrade option right now anyway. Slowly drift prices down with old tech here, like every other vendor, encouraging upgrades of very old tech for less-old tech.
5. user-swappable storage on all laptops and desktops using a sim-like port to remove/replace a blade ssd. This can stay proprietary as the ssd's currently are. This alone would be a gigantic win, allowing you to pack and travel with just your data in a tiny container rather than carrying around hardware for frequent travelers. Something similar to the sd card slot but super high speed storage with OS and data. Since apple has control of all the hardware and can bundle all drivers, it should be possible to make an image which runs on all currently supported hardware.
6. External gpu in 5k monitor leveraging tb3 40gb/s bandwidth to pair with new macbook pros. Push the edge of what is possible with tb3 now that it's out, use the laptop for processor/mem/storage, use the external display and gpu for rendering. We've been talking about that for years, now it's possible bandwidth-wise, but TC is not the guy to lead this type of innovation.
7. Ditch lightening for usb-c across the board (iphone, ipad, pencil, mouse, etc) so you can plug any device into any other device with a single cable using either end in either orientation for each side. This would be a horrible business decision but a fantastic and gigantic change in philosophy and could go a very long way to convincing users to stay.
8. Update the SE in the near future with latest specs. Maybe this will happen.
Some of these are more radical than others, some are poor business decisions, all but the last would be a bigger surprise than the 2016 election results.
I think most if not all are technically possible today and would still be cashflow positive though not 100% profit. Then they can still make their gigantic markup on the phones themselves while using these revenue neutral elements to keep existing users and feed new user adoption.
Meanwhile, they EOL their routers which work well, look nice and don't need to be updated very often because they don't make a ton of money off them. Which is the exact reason why none of the above would ever happen.