Now hold on, we gotta see if Luigi's Mansion 3 is any good first. :L

I'm surprised you haven't been bashed for saying that.

So far previews have indicated that LM3 has great promise.

And as for Splatoon/ARMS, the numbers are there for AngryLittleAlchemist, so I guess it doesn't matter. I mean regardless, especially for Splatoon, all the merch, the concerts, and the sales and popularity (especially in Japan) show otherwise. So while anyone can say Splatoon/ARMS are not good games, the numbers can speak for themselves. 

It's like when people ask why is Animal Crossing an important IP when its a Life/Social Simulator, while being a popular IP within the female and Japanese audience.

As for the OP, NLG have potential to create a new IP. Whether they can get approval of Nintendo from a gameplay perspective will determine if it comes to fruition.

I hope so. Nintendo really needs more western-developed games with a unique feel. Not necessarily to compete with Sony and Microsoft, but simply to help balance out their largely Japanese-developed first party stable on Switch ATM, as well as give the brand some extra appeal to Western audiences. They are taking baby steps, Marvel UA3 while developed in Japan, was co-produced by the American Marvel Games.

I say that because there are certain people on this site who will aggressively defend games they like. Even if you still like the game too, if you don't share the exact same criticisms as they do no more no less, then your opinion won't be accepted. So for him to outright call those games bad is quite ballsy, but perhaps he's part of the in-crowd so they'll overlook this transgression lul.

I don't doubt Luigi's Mansion 3 will be great, but you know, can't be 100% sure until it's out. NLG has made a variety of different gameplay styles between Strikers, Mansion, Federation Force, so I have no clue what their new IP would be like.

Federation Force was basically that. Someone thought it was a good idea to attach that game to Metroid though which meant it got bashed heavily. It would probably have been better off if it didn’t mention Metroid, or was it’s own thing.

FF was originally a DS game that was shelved until Tanabe decided to dredge it up again for the 3DS due to the New 3DS' control enhancements and more powerful hardware. It was always intended to be a Metroid game.

It's Nintendo and they're a Western studio, so that probably isn't in the cards. Retro Studios needed like 15 years to get an original IP after being restructured and completely bought out by Nintendo and they apparently blew it as the project is canned. I wouldn't expect them to get that chance again any time soon either.

If the Donkey Kong Country IP is still free that might be something they get to work on, but I suspect Nintendo has handed that IP off to another team. The Universal Studios attraction has a Donkey Kong area, so I think they will want a new game for it soon-ish. 

Retro's situation is different. Their mystery project was had been in development hell for a while, and they and Nintendo were growing dissatisfied with its progress. At least according to rumors. Next Level is more stable at the moment since they're not an official subsidary of Nintendo, and most of their games under them have gone pretty smoothly.

Plus, Nintendo's not afraid of producing New IP, they're releasing another one in just a few weeks (Astral Chain).

That's a Japanese studio. 

The last time a Western studio got to make a major original IP title was ... when? 

Nintendo is a very traditionalist Japanese company even by Japanese company standards. Given the cost of modern game development I think they are reticent to give a Western studio a chance at a new IP. 

Retro failing every time they've been given a chance at a new IP probably just reinforces the position at Nintendo. 

Snipperclips 2 years ago at the launch of the Switch. I'm not asking for a massive-budget AAA epic. But Nintendo can do more to work with Western AA developers to produce Western-made AA first party games on the Switch. Next Level is a good candidate for one of these.