I won't argue that R.O.B. was and is important for nintendo history during those hard times in the console busines. But it's clearly that was quite a failure. It cost a lot of money to Nintendo. All changed when SNES arrived in the USA. Nintendo finally got the power.
R.O.B. was a failure, but stil being an awesome WTF character in the Smash Bros roster. Aswell as Wii Fit Trainer. We're all like "What da fuq is that?". But clearly it'll be more than fun to see a Rob and WFT v Link and Mario on a team battle