Monoliths new IP won't count either since it's not made internally at EPD.
It counts for me, its one of the most valuable Nintendo IPs for me and MS is as valuable as the Zelda team to me. Still i would love more AAA singleplayer "hardcore" games from Nintendo.
They could and should do more, and it doesn't really matter to me if it's their own stuff (idea) or if they pay others for it, if it's internal or "2nd party", but there could be more. I would shut my mouth if every old singleplayer IP associated with Nintendo would come back, but many won't. and i think Nintendo is a bit too small for their own sake.
I'm glad they let Monolithsoft grow but there is always the fear they need them for the next Zelda etc. Honne would love to make a new IP, or work on Baten Kaitos 3, atm thats not happening, he has to work on Zelda and all the multiplayergames. Imo that's a bit of a waste, the guy worked on Chrono Trigger, Chrono Cross, Baten Kaitos etc. (ok, i forgive Nintendo for using him and MS Kyoto and half of the Tokyo MS Team for BotW, but that should be a single case).
And Zelda is selling like hot cakes, i don't think it would hurt Nintendo if they made a hardcore Hyrule Spin-off series with a high budget, or an entirely new Fantasy IP. But they would have to grow internally.
I guess Monolithsoft will bring new IPs, that's great, but the team is still relative small, under 200 people, a part working on other Nintendo franchises.
I love the Platinum and Atlus collaborations, or Mistwalker in the past or Fatal Frame. But Nintendo has to do those because they don't get every AAA 3rd party game like Sony. Sony has the 3rds and their studios make more big Single Player AAA IPs.
Sorry for OT, i'm still looking forward to Astral Chain, it's my Most Wanted this year for the Switch next to Fire Emblem.