I was cautiously optimistic about the Switch but under the current circumstances Nintendo are going to miss pretty much every prospective audience that exists for the console.
Nintendo fans who bought Wii U: Every other Nintendo game (if not more) in the early lineup looks to be a slightly improved port of a Wii U game. Aside from a few extra features, limited portability, and promises of better things down the road there looks to be little incentive to upgrade.
Nintendo fans who skipped Wii U: The price is the same, the lineup is mostly the same, even the system itself is mostly the same aside from, again, limited portability.
On-the-go gamers: In concept releasing a console that doubles as a home console and portable is the right approach, but in its current iteration I'm not sure the battery life meets most people's requirements for portability.
Gamers who need cutting edge tech: We always knew this wasn't going to happen.
Casual gamers and families: There are plenty of people in this category who would like to play the occasional Nintendo game, but not at $300.
As long as the system has been rumored for I'm a little shocked this is the best lineup they could launch with, and I can't believe they're pricing it at $300 and expecting success. Either they're going to experience a disappointing launch and have to drop the price to $250 in time for the holidays (and face the same early adopter backlash they did with the 3DS) or they'll leave it at $300 though the year, face a disastrous holiday season and miss the system's best chance at success.
There's nothing to be done about the early lineup but Nintendo are going to have to take a loss on hardware if need be and drop the price if they don't want to lose out on another console generation. They also need to prepare a contingency plan to ditch the screen and battery and release a home-only version for $50 cheaper. It would lose the "switch" concept but Nintendo's insistence on sticking with an inessential hardware feature that raises the price is partially what doomed the Wii U. (Conversely they dropped the signature feature of the 3DS for the 2DS, and though the execution left something to be desired it did net them extra sales.)
As someone who relocates too often to invest in a full-sized console and doesn't require cutting edge graphics, but would like something a step up from the 3DS and smartphones, I was hoping the Switch would at least fill my own particular niche, but not with that price and lineup.