The problem with that is the franchises most suited for a mobile interface (JRPGs like FE, Advance Wars, Golden Sun...) are the least capable of selling on the mobile space, due to them not being that well known by the casual market. The only franchise that could work is Pokemon, and Nintendo won't bring a mainline Pokemon game to mobile until they stop making hardware. That's the reason Pokemon Go exists.

"I know Nintendo said that simply porting old Nintendo games to mobile devices wouldn't be a sound strategy."

Enough said. No.

Not any of the games that you listed would work well.It actually would be terrible.Just this phrase
"Animal Crossing might work, provided they put in a sort of point-and-click interface for moving, picking things up or talking to people."
shows that you dont know much of what you are talking about.

With a few exceptions like the Warioware franchise, no Nintendo game would work even decently in mobile, because they were not build with it in mind.They were build with buttons and a screen that dosent have a finger in the middle of it in mind

If we are talking about ports and sequels, Planet Puzzle League, Brain Age, Nintendogs/cats, Electroplankton, Picross and the likes would definitely work well on mobile

Tetrisphere for N64 is worth looking at as I think you could easily port its controls to a touch screen. That was such a fun game, I have no idea why Nintendo never re-visited that franchise on the DS or 3DS.

They won't port those type of games because they are not appealing to the casuals

Ninty needs to stay in the console market. They are still healthy, don't let the WiiU fool you. Fact is Ninty fans would be upset about them going mobile, and many would not buy their games. Furthermore have you seen mobile store as of late? They are riddled with cheap or even F2P clones of most of the Ninty style games. Are they as good? HELL NO! Will the casuals who pretty much make up mobile gaming know of this, or even care for that matter? I somehow doubt it.

Nintendo will never be back on top, but they need to stay relevant in Consoles to be as successful as they even are now.

I really think they should sell their old NES, SNES games on steam. Most of those people would never end up buying nintendo's home console anyway, thus it would be great to target that large population of steam users. They could make a lot of money. Sadly, that would probably never happen since Nintendo seems to be unaware of the popularity of steam/pc gaming

I mostly agree. I do think, however, that Nintendo does intend to make mobile a significant pillar of profit. I don't, however, think they will ever priotitize profit over accessability in that space. The primary goal for mobile, as you say, it to tie in, and more specifically expose, people to the Nintendo ecosystem. It's a very big secondary consern is what I mean.

Nintendo will make no where near as much money putting their games on mobile versus on their own handheld/home systems

people actually are REALLY into the virtual console and buy the old NIntendo games on their 3DS or Wii U already. I think its a cool idea and good business strategy to do SOME mobile stuff, but just porting over a bunch of old NES games onto mobile or whatever could really hurt Nintendo's brand and console business

a lot more people than some realize buy a TON of virtual console games on the Wii U and stuff. 

I also don't necessarily buy that someone is going to be able to comofortable play a lot of traditional Nintendo games on mobile. you need a comfortable array of buttons, a lot of the games aren't easy

if anything Nintendo probably is going a bit into mobile to market and draw more people into their CONSOLES. they're not doing the opposite