It is literally impossible to make an informed decision about whether you're interested in purchasing it.
Are you disagreeing with this?
I know for a fact nintendo will be putting games on it. Very high chance it gets new entries in my favorite franchises, like Zelda, Smash bros, Mario, Mario Kart.
Based on knowing, FOR SURE, nintendo will be making games on it, with a HIGH probability that some of those games will be brand new entries in my favorite franchises, I'd say it's pretty safe to be excited for a new system and already want to buy it. For me, that's all it takes.
That said, they could theoretically do something abhorrent (like murder 2 puppies for every console made) which would cause me to not want one, but considering their track record, I see it unlikely.
Galaxy and Mario 64 aren't the same "style". In fact, none of the 3D Marios (aside from Galaxy 2 for obvious reasons) are the same style as one another
You have 2 mario styles.
Style 1: Reach the end of the stage (or one of many ends).
Style 2: Find an item in the stage (which can just be 'reach end of stage' as a subset of that rule).
3D mario usually refers to style 2, which you would define as Mario 64/sunshine/Galaxy/Galaxy2.
That's all anyone means. I don't think anyone actually believes 64=sunshine=galaxy. It's easy to see their differences.
I personally prefer the 3D style (style 2) because it can be a little bit more puzzly/explory a times, more like a zelda game in ways.