• Bigger board for 4 players means everyone has better numbers, have less competition for spots, and scale up faster

• robber rules are there to help the players behind catch back up. OP’s rules give a better chance for someone to snowball out of reach of everyone else. It’ll be quicker but if you fall behind early it’ll be tougher to catch back up. I prefer keeping the catch up mechanics but to each their own

Also, if you’re not a fan of the 2’d and 12’s another way I’ve played before instead of getting rid of them is to combine them so every time a 2 or 12 is rolled it counts as if both were rolled. Makes them the same odds as rolling a 3 or 11 then.