Anyone who supports this: in a few years, think about what you have done, when Sony asks for just a few dollars each so that you can play PS3 titles on PS4 with 4K support or something like that. Ask for retro games to get filtered video output - another few dollars.
Drama, drama. Over history, I've actually like service that one could say "should be free" but yet ask for some money. Why?
Because people tend to treat paying customers better.
PSO went from Free-to-Play to Pay-to=Play, and the kind of content offered, and the size of it, became much more interesting. If a company wants to keep getting money from a service, they keep improving it.
A free service does bring them income (Well treated customers are happy, and wish to support you!), but they could also say "Well, it's not direct money, so we don't have to do much to make people happy... it was free anyway!"
I already mentioned it in my post above, but if in, say, 10 years, I think "man, I payed 14 dollarsoverall, to have BC with one of my favorite games, across multiple console generations!"
... I'm not going to be mad. Rather pay a few dollars over the course of years, than have to hunt down working systems and new controllers, get repairs from foreign places for no-longer-supported products, and have to worry about hunting down antiquated TV hookups, or go through the work of learning how to rewrite the system myself, just to play an old game I miss.
I do hope Nintendo is pressured into / has already planned out how to prove that the additional cost is worth it. (We already have quite a few great options and additions mentioned in this thread!) If not, then we can all complain and give some constructive criticism at a later date. But for now? Bring on the WiiVC!