Expect a nintendo system and you won't be let down. Specifics don't matter. The quality of games brought to the system is all that matters in the end. Whether those games are valuable enough for you to buy the system is the core of all of this. Do graphics matter? To some. Do 3rd party matter? To some. Value of the system is all that matters and raw numbers don't mean jack (unless you think good numbers = better games in the future - which isn't a guarantee. Greatness awaits, remember?).
To be fair, "Will the next Nintendo System have good Nintendo Games?" isn't all that interesting to discuss, especially without any specific games. The games we like being there is a given.
The reason why people are interested in specs, "gimmicks", third parties and positioning is because those things are up in the air. Can Nintendo continue to position themselves the way that have in the past two generations? What would they need to attract a specific audience. Is there evidence of them targetting a new market? Are they in talks with third parties? How powerful would their console need to be to compete with the PS4 and Xbox, what does that even mean, and would they even want to? There is potential for the deciding factor for the NX purchase to be more than just the value of the first party.
My purchase of the NX doesn't hinge on any of questions that I just mentioned, but they can provide a decent enough back-and-forth that keep these threads going.