Requiring a user's full address only make sense for Ticketed events.

Maybe it's just my org, but we like to make things simpler for free RSVPs: only names, email, and zip code. I just learned Events require the full address. We ran into a lot of addresses being overwritten with just zip code, and an address change autoresponder was triggered, creating a fair amount of confusion on the users' parts.

So, at the very least, please mention the required fields on the Configure Constituent Registration Information step in the Event process nav.

Or, maybe even better, have the required fields pre-loaded in the Displayed Fields column, like first, last, and email already are.