Mario is an over rated character. he has had his time in countless games and doesn't need any more games just for him. Even in Smash Bros, nobody plays him and he's basically useless. Everyone wants someone new, not old characters from the 50s or something. Mario is old, and we need something new. Thats why we should do more with maybe Luigi not just with ghost mansion but something more with him as he is normally a side character.
Mario is a very popular game franchise( and Nintendo's mascot) which in the past few years has earned Nintendo millions in dollars, and so many people grew up around this character that if Nintendo announced that Mario would never be used again, they would probably be very mad and upset, and maybe even riot! Long story short, Mario is one of the best known video game characters out there. So many people out there have been a gamer since they were little, and for most people, Mario was one of there first games they played. That is why Mario should remain in games( and people normally don't use him in smash because they think so many other people use him, such as my brother, that they want someone people probably won't choose, such as Ike or Little Mac).
Mario is a popular franchise, and earns a lot of money but if nintendo manages to make a character -maybe not little mac- to be as awesome as Mario is now then it would earn much more money as it would be a new game with new characters in it. Sorry to say but people who don't want things to change, as in Mario can only hope that Mario will still be around when they are old or when there kids are old as Mario will be, well old. Mario has had its time and even in smash, Mario is not that powerful and not that strategic and thats why professionals don't use him in tournaments. People don't use him much anyway in my opinion. Again Mario has had its time and i think that its time to have something new! not something old. What more can they do with Mario anyway? they did a game where he can turn into a Racoon?! people are running out of good ideas for games with Mario so to answer that problem, just get a new chapter to get peoples attention that is as good as Mario.
People that have been with Mario since the beginning are glad he is still around so they have something to relate with their children( and even grandchildren!). The fact that smash is only 1 game and so many people are Mario fans means that Nintendo just can't ditch him. He even helped in the creation of( my favorite game character) Sonic the Hedgehog ( Sega was looking for a mascot to compete against Mario's fame and when there old mascot, Alex Kidd, wasn't working, they looked at new ideas, hence Sonic was born). Mario is not just a game to some people, he's part of there childhood and fun, and if you take away someone that's touched so many gamers and people, your taking away there past and part of there life.