I'm imagining $1.99/mo, $10.99/6mo and $19.99/12mo right now based on the pricing information we've been given.
What if they did $2.99/mo, $15.99/6mo, and $29.99/12mo to let us keep our Nintendo game? I'd pay the extra amount. It's already a pretty cheap service, so $10-$12 more a year to permanently keep twelve online-tweaked classics sounds like a deal to me.
Discussion started at here by Abbx