Personally, I'd rather see the Wii succeed, as it seemingly is already. Why? I don't like the HD absolution that the other two companies are trying to enforce. It's not a good look and frankly, HD makes me physically ill with motion sickness and other issues. Making it your selling point doesn't earn you my sells.
I'm aiming towards RPGs. Anyone that has been paying attention to my posts all these years knows that I want a story. Gameplay is secondary, RPGs tend to tell stories that are geared more towards my interest group. All the opinionated bullshit aside in the other topics, I'll just get right down to the details. I like Eastern style methods of display, in writing, musical and visual form. Anything that gives that to me, I enjoy.
Help: Not trying to fix what isn't broken, throw backs to original source material, sequels.
Hurt: Unnecessary changes to appeal to "other crowds" and constant desire to change. Change is good, in moderation. Wild change is just chaotic. Star Ocean's jump in battle system from 1-2 to 3-4 is an example. While I liked SO3, arguably my favorite, the drastic change in battle system and then 4's completely erratic additions were unnecessary and game breaking.
PB said a lot of it, but honestly it really is about making an extra buck by banking off of HORRIBLE decisions. Despite the increase in... interesting audiences, catering to the newbies isn't going to bring about the most desirable result. Part of that is biased, but part of it is true. At the end of the day, the Madden Halonauts will only show so much patriotism, the classicals and often considered "Nintardos" are the ones that always buy the extra products, more than one copy of a game and purchase special editions. But eh, just my two cents really.
Same goes for the following question really. It's all about money... which is both a good and bad thing I guess.
It can be done only in theory. There will always be a clashing involving the whole "East vs West" and trying to fuse the worlds together or find a middle ground. People enjoy bitching and enjoy the chaos. But also, people enjoy what they like being untouched by the "other side" due to lack of best interests for eachother.
Lastly, Nintendo is a buncha crazy mofos that are good at what they do.