That's cool, although is the arcade cabinet part really necessary? Its not a dealbreaker by any means, just seems like a way to push msrp up.
Someone should be sure to mention when they set a release date or when preorders open up.
I think the arcade cabinet parts makes it a much cooler novelty than any of the Nintendo releases. I don't expect them to use high end Sanwa parts, so I don't expect the price to be astronomical. Plus, you don't need a TV, which is always nice.
I'll keep an eye on the release date and price.
As for long plays, these devices are not meant to be for that, they're novelties. Publishers just release higher end versions on consoles which are meant for longer play sessions.