Way to go not putting your arcade games in your arcade app that you made for a reason to release arcade games on. so counter intuitive.
The writing has been on the wall for a while though, that the Cabinet app is mostly intended for smaller/older releases. Even with this release though, there's still a chance arcade cabinet could still be used for other, smaller titles; That setup could also be used for a sequel-game style release (similiar to how Pinball FX released a 2, that brought the old tables along with it.)
We also have to keep in mind that different dev houses aren't going to use the same app. The Darkstalkers and Marvel Origins releases aren't the same as the Final Fight Double Impact or JoJo's releases. Every one has varied levels of quality and detail commitment, so lets just hope D&D gets among the best!
Really curious to how this one will work out... Double Impact had fully remixed soundtracks and quite a lot of extras... Darkstalkers has fantastic tutorials, JoJo's preserved it's original intros and attract modes... where will this one take us...