playstation classic, obviously designed by non gamers and was rushed, horrible system, they should off reshelled ps vita and added 2nd usb, would off should significantly better and with psn store as well.

Phones didn't take over as much as 3DS just dropped the ball. It was overly expensive, tiny, and had no games. Had they launched with a $150 2DS XL in winter 2011 they would have done way better. Glasses free 3D dragged the 3DS down in much the same way that the tablet controller dragged the Wii U down. Without either gimmick both the DS successor and the Wii U would have been affordable systems.

Super Mario World was rushed? They worked on that thing for 2-3 years. It was ready for launch, and IMO is one of the 5 masterpieces of the SNES. The other four being Chrono Trigger, Final Fantasy 6, Super Metroid, and A Link to the Past.

Virtual Boy.

Had they released it as effectively the same thing but with an 8-bit color palette (heck, I think even 4-bit would've sufficed), I think it would have done vastly better than it did.

It also had a bad form-factor - if it had headstraps like modern VR systems, it would've been more palatable.

Both of these issues probably would've been resolved with a longer dev period, but it is what it is.

Funny thing is they were in talks with Sony to develop the Saturn before that.

 After the Nintendo deal fell through Sony and Sega talked about a partnership but it wasn't specific to the Saturn, and Sega knocked it back,the stumbling blocks were from Sega's side. they feared with Sony's strength in hardware they would soon become the junior partner when it came to hardware and would basically be consigned to the software side also when asked to commit there and then over dinner, Sony's Chairman rather than answer would change the subject by talking about his travels, from Sony's side Kutaragi and associates were firm in the belief that they should do it themselves , so that's what came to pass and Namco became in their own words a de facto  2nd party for PS1 writing the majority of the libraries in conjunction with Sony and receiving preferential treatment.

They worked on it 2 years while also working on Link to the Past.  There is a 2 year gap between Mario 3 and World.  There is a 4 year gap between Zelda 2 and Link to the Past.  Considering that Mario World was the first game released on brand new technology, yeah it was rushed.  Most people who lived through the NES and SNES eras will say that Mario 3 is better.  Mario World mostly seems exceptional, because its the only new Mario game on the SNES.

Speaking personally, Mario 3 feels a lot more polished than Mario World.  Mario World is too easy and isn't as densely packed with secrets like Mario 3.  It's still a good game, not denying that, but it feels rushed.

Source for them working on both games at the same time?

Do you have the issues of Nintendo Power around 89-90?  They had been talking about "Zelda 3" for years before it was actually released.  You can also compare the Wikipedia pages between Mario World and ALttP and see several of the same key people working on both games: Takahashi Tezuka, Shigeru Miyamoto, Toshihiko Nagako.

EDIT: Actually found this quote in the wikipedia page for ALttP, "In 1988, development of a new NES Zelda began, but one year later, the project was brought to Nintendo's next console; the Super Famicom in Japan, the Super Nintendo Entertainment System in other regions."

Do you know the exact Nintendo Power issues? Wikipedia's sources on the issue either lead to dead webpages, or don't exist anymore.

I remember using my launch PS2 more as DVD player than for games for the first few months. (Thank God for Tekken Tag Tournament though).