I think you buy in too much to the marketing because a bunch of people coined terms and wrapped pretty words around them.
For Nintendo's "disruption" to be true, you would have to pretty much discard the motivations behind each individual company and treat them as a general statistic with no goal except the ones relevant to Nintendo.
For legs to have meaning would require that a game sells incredibly well in spite of it having stiff competition in its style, genre or so on. Nintendo games usually have legs because no one competes in those same game markets. Of course this wouldn't be true for front loaded games like Gears which will have a sequel and is competiting against a lot of other shooters. When it comes to the Wii, the core titles are already very limited in choice and having some legs does not make up for lack of titles.
As for something that no one wants, I think this line sounds REALLY like marketing. The PS3 and 360 have sold a combined total of 35 million consoles are higher prices than the Wii. That pretty much says lots of people want those consoles. Its about price as well but thats an entirely different factor.
You can say Blue Ocean if you want and that Nintendo balanced production cost to make a profit. This is completely irrelevant to MS and Sony. They don't WANT to make a low end console because that wouldn't fit into what they are doing. Making a Wii Box would just be short sighted for Microsoft to say the least. PS3 wouldn't have had a problem with beating the Wii if it didn't choose Bluray over gaming. Now its suffering the consequences. But whats worse? Losing the format war or losing the console war? Its hard to say that the Wii's profit would have been considered a good deal to Sony if they had lost to HD-DVD or dragged it onto infinity.
As for HD being a gimmick, that would mean its novel and wears off quickly. Since its actually just above the average standard of consumers, thats not a gimmick. HD gaming also does not strictly refer to the 720p/1080p resolution. Things like having very detailed visuals, large environments and enemy counts and so on are clearly better than what weaker hardware produces. The Wii is considered a gimmick because the control scheme seems to be novel and in all the major titles, is not clearly useful or superior. People say MP3 made good use of the Wii Mote... but it wasn't all the responsive and really just gave us Auto-aim and some novel tricks like turning a key and pulling some blocks. Its a very superficial way to package a game as new as opposed to a far more detailed game world with more interactions and better NPCs or more weapon effects and smoother animations(especially for morph ball) and so on.
