Mostly bonus content that's not post-game, actually. If I add boss rush, it'll probably be as visible as the current "survival mode", or perhaps it'll just be kept as a secret. To make it visible like Survival mode, it would need to be in a separate menu, probably alongside Survival mode, since the title screen menu is out of useable space.
The NCFC bonus will probably be shared pretty openly at NCFC, but undocumented (so, an NCFC exclusive secret, so to speak). The password will almost certainly just be "NCFC".
It seems like it would be a bit of a shame to keep that content that well hidden. I think you should at least hint at it somewhere, like putting it in a really small font in the corner of the screen on the main menu.
That's kind of what I want, too! I want someone to be as good as me so bad that I've been avoiding submitting scores in the fear that that will discourage people from even trying. :laugh:
I'm trying as hard as I can. It just makes such a big difference being a developer... I'm afraid you're going to have a hard time finding somebody to compete with you. I've come close a few times... but if you're holding back scores...