Introduced some visiting friends to Roll this past week and, while it was their favorite new game("Let's just focus on this one for the rest of the week," my friend said to his wife), I thought of some ways to add even a bit more thematic flavor to the game.
During the roll phase, throw your dice at an opponent. The last dice to hit them in the eye counts as your phase selection.
King of the Hill (for FLGS use)
During the roll phase, shake your cup in the ears of players sitting at tables around you. Stopping the flow of another board game grants one victory point per round.
I think that Full-contact Roll may give players with glasses or sunglasses a HUGE advantage. At the very least, it would definitely slow down the game in a 2 player game.
For King of the Hill, depending how big your FLGS is, I think this variant might break the game.