My greatest advice to you is ... judge Nintendo for their present actions, not their future actions. I.E. wait to see how the next console turns out before making that decision.
Although I have made my criticisms of splatoon and smash bros dlc in the past, I do acknowledge Nintendo as a good publisher. Unfortunately even the best of the best will make wrong decisions from time to time.
Honestly, their problem stems back to when they made the hardware for the wii u. Bethesda openly revealed how it was Nintendo making Nintendo hardware mainly for Nintendo games, despite the many many concerns from 3rd party publishers. It is now that we are seeing the full effects of that decision. IMO as long as Nintendo realises this and makes a console for developers and not just Nintendo games (common architecture, sufficient power, special features), they should be fine. They can even release it alongside a gimmick, as long as they realize that they need to prioritze the basic essentials of the console.
tldr : Sony went from last to first in one generation, Nintendo may do the same if they finally get their act together.
This is a good post, thank you. Cooler heads should prevail.
I am extremely angry at the moment mainly because I am drawing conclusions based on the lack of quality Wii U content that I saw today. That said, you are right that we shouldn't judge the future based on this snapshot. I am sure that Nintendo is hearing a lot of this angry feedback from fans and they may even follow E3 up quickly with some substantial Nintendo Directs for the Wii U.
Here's to hoping.