Those 25GB are per layer. Wii U only uses single layer discs, that's why Xenoblade Chronicles X has the download content, but like every other Blu Ray based dusc, it can be double layer and have a total of 50GB.

Its enough when used in conjunction with HDD, not too dissimilar to the current day 1 DL update/installs.

How many games use more than one layer though and with legitimate reason other than not being lazy with compression, PS4 and X1 games have mandatory installs so data is not read off the disc, going by the patents it seems installs could also be an option on NX. Who is also to say larger sizes aren't available if need be.

The full game probably won't be on the card if that's what they do anyway. You'll get a 8-16GB card which will be cheap and let you play the first 3-5 hours of the game, the rest will download to your HDD.

Hell even most disc based games are like this now, the moment you get home you have to download a huge update/patch to play it.

The days of full video games being completely self contained on their physical media are long over.

I hate day1 "patches", and I'm not the only one. Using them as a good example won't convince anyone that this is the way to go.

So? If Sony or MSoft can't convince third parties to compress their games, do you really think Nintendo could do it? And why should they? Because otherwise they couldn't sell their games on NX? They aren't selling them on Wii U/3DS and are doing quite well without them.

But of course, if Nintendo makes a machine designed to sell their own games and not focused on third parties (something that isn't as bad as it could seem, if done right), then ROMs should be fine if they are willing to take the extra costs.

As someone has mentioned when used with a HDD it's not much of an issue, fact is the standard size for a disc is 25GB which most developers use and can request for a bigger size if need be or compress data, third party perfomance on Nintendo platforms is irrelevant to this point as by default 32GB is more than what standard discs now are offering, if you're going to say layers then we need to add the bigger size carts.

The fact whether any of us likes it (no one I'm sure) is not relevent, it's just a reality that's been going on.  

You're assuming that NX will come with an HDD, some thing that we don't know. Some people also thought that Wii U would have them given that PS360 used them and many sizes, always getting bigger and bigger. For all we know, NX could have 32, 64 or 128GB of flash storage and rely on external hard drives to store our digital purchases.

And bigger size carts will have the downsize of not being mass manufactured and because of that, also more expensive.

Wii U came with the ability to use external drives something PS4 and X1 didn't have at launch as Wii U didn't require mandatory installs, going by patents and Nintendo's current direction it's likely the console variant will have comparable internal storage as it indicates a platform with mandatory installs. Either way 32GB is more space by default, on PC I have a number of multiplatform games on Steam and I can't think of many that hit 30GB.

Not everything that is patented gets used. Just because Nintendo patented something, it doesn't mean that it will be used in NX.

As Wii U proved, 32GB is not enough by any means. And if you can't think of many Steam games that hit 30GB... take a look at this article from one year ago

http://www.pcgamer.com/the-problem-with-growing-download-sizes/

Digital distribution has been good for PC gaming. The convenience, sales, and increased exposure for small developers have made our hobby significantly more accessible. The increase in download sizes over the last few years, however, is starting to make some games a little less accessible.