Whilest i enjoy Carom, i can see the reasons why it hasn't taken off, mainly the rather exreme difference in rules from the other two games.

I feel pocket billiards would be a good alternative. Combining the skills needed for Carom, with the potting and scoring system more in line with snooker.

No harm in adding it much like was done on pool with the old and new US games, letting Nick decide which to go with depending on popularity.

I used to enjoy the odd game on practice but not enough to play it in competitive but i'm sure pocket billiards would be a hit.

i play it on prectice 2 see if im any gd mny best run is 6 but not many ppl play it ranked so when i feel like carom no one alse does lol