P.s. there will still be those who won't be satisfied with 24+9, and they won't want to spend 10 hours on a game that can be played in 4. It would be okay if it actually helped, but they'll spend 10 minutes thinking about whether to take a pile of gold or a pile of wood.
Give some players a one-hour starting timer, and they'll still lose it by the end of the first week.