[MaadHatter]

The video said that change is coming, so I doubt they're going to recycle much from the previous years, doesn't really connect with the hint.

The throwing away of the game rules probably means they're changing something big, which could mean anything. Number of alliances, number of teams in the alliance, large change in field size or shape, large change in robot size or shape, or something else. The hint actually tells us less about the game then before, because before at least we could kind of count on most of the general rules being the same.

Also, I doubt it'll be a projectile game, they wouldn't say change is coming and then give us the fourth projectile/shooting game in a row. Probably better for newer teams so that they're not going up against teams that have been working on some sort of shooting mechanism for the past 3 years.