I'm impressed by how compact Nobunaga's Ambition is, it's a really deep game.

Having worked with Skyrim quite a lot in the modding scene, it's very much down to use of assets more than almost anything else.  And this likely is a reason other games bloat: they don't make clever use of assets.  Bethesda is actually very good at gauging what the average person will and won't spot in terms of repeated assets.  And so they reuse quite a lot and instead focus on scene composition as a means of visual variation.  Nintendo does similar things with Zelda (and likely will here too) to varying degrees.  Meanwhile a lot od these bloated games likely have a ton of asset variation that essentially no one notices.  

Well, this only confirms what we've known since Nintendo confirmed the 32GB of internal storage, that going digital with Switch will require the use of a lot of SD cards (or a few, high capacity, ones).

Not much of a surprise, honestly.

Lol yep! Anything besides them Vita cards XD 

That's complete BS. Other developers know exactly how to do that. There are just several reasons that speak against it.
1. compressing files is more work
2. negative impact on quality
3. the platform owner has to pay for the traffic caused by a download, not the developer or publisher
4. Blu-Rays are big enough
5. Smaller games have less language tracks

A developer gains absolutely nothing by compressing files. Nintendo does it because A) their consoles have space issues and B) they need to pay for the traffic caused. So smaller games actually save them money.

There was a little confusion too when you see games having to use CD audio in certain places because there just wasn't enough memory in the console to hold enough info to make full use of the psones sound hardware, meant games like GTA which was about 50MB of game code turned into around 500MB of ripped rom, but yeah if you even converted that into MP3 audio you would be talking about less than 100MB total size, but the PSONE just didn't have the tech to do that.

Seems good. DQ is quite big, but it's quite obvious that people will buy SD cards for their consoles. A 128GB one is quite cheap.

Assuming that all devs wouldn't know something as basic as this is ridiculous. 3D World was on Wii U, that's basically a gen behind PS4/X1. Switch is basically between gens powerwise, so it's reasonable that games won't get too big. The higher performance on the other consoles allow better textures, more stuff per screen, high detail models. All this increases the size of the game, but it's a reasonable trade-off.

Saying that "they don't know how to compress" without knowing the technical details about each game couldn't even be classified as a wild guess.

if I get a Switch I will probably get a 64 or 128gb microSD and just go digital

Everyone keeps comparing these sizes to the PS4/One only as proof. Like the Switch is so far behind the PS4/One in graphics/textures/resolution/ect that its on duh the sizes are 4x as large, or in 3D World like 20x larger.

But just copmare to PS3/360 games then. PS3/360 games were no where near the 1.7gb size that 3D world pulled out. Or other games people have listed in this thread. And 3D World, Mario Kart 8, Pikmin 3, ect all are top of the line graphical games in concordance with the ps3/360 era of games.

But say what you want about compression, the thing to be excited about is Zelda's size. It's astronomical compared to prior entries. So unless Nintendo randomly decided to get sloppy in their file sizes, this game will be huge compared to any zelda game before. Yes, there is voice acting to some degree and the better hd audio track on switch's environments, but I doubt the audio is whats bringing it up like 5-10x larger size.

Yea, simple. I think you can get a 200gb card for like $60 right now. I'll be getting a card sometime this year. No rush. the 26gb or whatever the actual space is, will last me for a bit. No need to take on another $60 to my $400 day 1. Spread out the costs a bit. 

But barring many DQ1-2 games filling 32 gb, a 128gb card will last most of the gen, imo, without even deleting.

But it's basically the same upgrade size/price as any PS4/One. You are paying like $50 for an extra 500gb on those systems. And those 200gb on a Nintendo system go a lot further than an extra 500gb on the other systems.