I think SMM and Splat have different development teams, so I don't see It as SMM taking anything away from Splatoon. It's more likely that the devs want to finish out with Splatoon so that they can get started on a sequel while they have the green light from Ninty's execs. Game development averages around 18 months (so I've read). If they want to get a title out on the NX and still have a year or two of console life left, they'd certainly need to get started soon if Ninty is serious about a Spring 2016 debut for their new toy. Splatoon really doesn't need DLC, so I don't think end of support is a big problem. If it means they can get to work on a follow-up, I think little-to-no DLC is a fair trade considering this game is really fine as is.
Some games under Nintendo take longer than that though. Every Super Smash Bros. game after the first one has had a longer development cycle, as are main-series Legend of Zelda games and Pokémon games. (Whenever a Pokémon generation is introduced, for instance, the designers at Game Freak immediately begin designing the next generation. This means that the time between Pokémon generations is really the amount of time it takes to make a Pokémon game.)
Some indie games also take longer than 18 months, but that's for different reasons entirely.
You seem to be under the impression that Splatoon will just flat-out die when they stop releasing new content for it. Just... no... My point in my previous post was that the game is simply too popular to just die out when they stop feeding us new stuff every week. Smash DLC is ending in February, but is that game going to die? Of course not! Splatoon is going to end off with more than triple the maps and over double the weapons it started with, not to mention Splatfests still being a thing, and probably Octolings (I'm sorry but a lack of plans for paid DLC =/= a lack of plans for playable Octolings). If stopping new content for the game after all that is an idiotic move, then I guess Nintendo is the smartest group of idiots out there.
Yeah... I just said that... >.>
Another example is Mario Kart.
Mario Kart DS and
Mario Kart Wii continued to sell and have a lot of people playing online all the way until Nintendo Wi-Fi Connection was discontinued.
Mario Kart 7 and
Mario Kart 8 are both strong sellers nowadays, with them next to each other, usually swapping spots at the bottom of top-10 selling games week by week (in Japan, at least; reliable numbers are a lot harder to find worldwide). And of these, only
Mario Kart 8 has had DLC (besides patches).
Pokémon games and Super Mario games continue to sell very well long after their releases too (the former causing the "Pokémon Premium" for used copies where they continue to sell for almost as much as retail even after the next generation comes out), as are Smash Bros. games, Wii Series games, and Animal Crossing games. Minor IPs play out this way too:
Yoshi's Woolly World is currently exhibiting sustained post-release sales, for instance. This type of sales pattern is known as the "long tail" or "evergreen," and Nintendo is VERY good at it. The only major IPs Nintendo has that have a quick-burn sales pattern are Kirby, F-Zero, Pikmin, and sometimes Zelda. And Nintendo rarely ever needs DLC to sustain them, and it's arguable any of them never needed DLC in the first place. It does help that Nintendo continues to promote its games long after release though.
Long tail sales are things people at EA and Activision can only dream of, as games like the Call of Duty series and Assassin's Creed series rely on yearly installments because their appeal dies out by that time. (Ubisoft can pull off lasting appeal though, but it requires artistic geniuses like Michel Ancel to do it.)
On a related note, Sonic the Hedgehog games predominantly get long tail sales too:
Sonic Colors, for instance, passed the 1 million sales mark a year after its release. Three years later, it passed the 2 million sales mark.
Of course Inkling would've been a great addition (he was my 2nd most wanted character actually), but I can see how they would've had trouble with implementing some kind of unique ink mechanics that could affect stages and characters, especially when you consider 8-player Smash with 8 Inklings. At least when we eventually get a Smash 5 I think Inkling's inclusion will be planned from the beginning so they'll have more time and manpower to bring out the full potential of the character.
Yeah, I see the Inklings as being the next Villager: Even if there was the necessary time to put them in (and I don't think they did), there would've been many issues with how an Inkling can function in a Smash Bros. context while staying true to his or her own game. Particularly for
Super Smash Bros. for Wii U and 3DS, great pains have been taken to try to keep each newcomer faithful to his or her roots. Someone like Ryu could fit right in. The Inklings, however, would've clashed completely.
But they had a ton of in-game footage of Bayonetta. That takes a ton of time to make.
Obviously Sakurai's team was doing this before the Ballot ended.
I can confirm that this is at least what some game developers do: Post-release DLC for
Sonic & All-Stars Racing Transformed was to be decided by a vote, and Steve Lycett, the producer and director of the game, told people at the SEGA Forums that he predicted and observed the early leaders, starting work on them long before the polls ended (with the exception of Hatsune Miku, whom no one on the team expected would take 2nd place). When he pitched them to the people at SEGA, they were already well in progress. Several months later, the poll's winner, Ryo Hazuki from
Shenmue, was added as DLC. (The game itself dropped in popularity on every platform except Steam by then though, so Ryo was Steam-only.)
As for the other characters, I think they were dropped in favor of other, unrelated characters that SEGA insisted be put in, like the Football Manager and
Total War's Shogun. And Yogscast Simon. (For the record, Bayonetta took 5th place.
Here's the chart, if anyone's interested. The line for 1,000 votes is in yellow because that's the minimum needed for Lycett to pitch those characters.)