Well I think we, people who actually buy Nintendo systems and actually want 3rd party support, should , at least, start to buy the good ports. I think the mass effect 3, deus ex and most wanted U are AMAZING ports and I saw a lot of people saying "meh old game, can play anywehere else" or " people already played this six months ago" and when I asked: "Did YOU play?" i got "No but I can play anywhere else" A LOT.
There is some kind of stigma in this realm. If the game is not perfect, the better version and launches at the same time the onther versions I feel like most people, even if they want the game, will not buy it at launch and just wait to buy it used or cheap. The hype factor with 3rd party games on Nintendo is not cultivated because we always get screwed. There is always a catch. And doesn't help we are in a generation where there are videos of comparisons everywhere. I mean Darksiders 2 have problems across all the plataforms but I just know the Wii U version is choppier some points, have less light effect in some places and less trees because I saw a video. When I actually played the game it didn't affect my overall experience. Splinter Cell : Blacklist is INCREDBLE as game, but on Wii U have a lot of long loads and framerate problems. The loads are only when you enter the game and when you enter or leave a level. Between this no loadings. And I don't think the framerate problems are too bad and Wii U versions have vertical sync.
AC have good versions and we got them at launch but it was not enough. And I don't think this is beacause the public wasn't there, but because every game news site was pointing out how textures were muddier on Wii U or how buggier this version was. The marketing for Wii U in general was always negative. How do you expect people buy the games this way?
GameCube was a on par console? No. People think a lot about the tech part but forgot the time. At that time DVD Movies were a huge deal. Launch a game console without a DVD was like launching a game console without netflix today. And even though this should not affect the gamming side, it affect the marketing. "GameCube will be the only console not compatible with DVD movies". Even if the the gamer don't plan to watch dvd movies on it, when he went to the store to choose between the consoles this was something he considered.
I agree with something someone in this thread said about Nintendo always being weird with choices. After the SNES, we never had a console on par feature-wise with Sony and Microsoft. And I think the marketing of knowing you made the better choice is very important for the consumer. As a Nintendo fanatic, I always hope to be screwed by something at some point. I never, once, after the SNES era, could defend a Nintendo console as the best console and, to be able to do this, is what drives the hype for buying. Why Nintendo games always sell better? Because the buyer can defend them as amazing games, amazing versions, amazing experiences you can't find anywhere else. So is money well expent. But how can you convince someone to buy a console when the most visible and most talked things about it are it's flaws? "It doesn't play CD's" , "Cartridges are expensive", "There are no online games"," It doesn't play DVD's", "3rd party are jumping the ship", "It's a weak machine", "2 gamecubes ducktaped together", "Motion game is a bad gimmick", "The name sux", "Too expansive", "no 3rd party support","no games".
tl;dr: So I think the most challenging thing Nintendo must face is to create a product people will actually believe in. People will buy thinking they made the best choice. If someone question you for buying NX you can answer by its obvious qualities and not do what we all do today with Nintendo wich is justify the flaws.