Forward facing low down child carrying is the big one. Carrying a little one on an omnium is I'd say 80%good. The fact that the bars punch them in face in a crash is a big downside
I didn't like the handling of the bullit when I borrowed one. I think it's the vertical head tube. Felt very twitchy and I felt unstable when taking one hand off to signal whereas the omnium feels much like a normal bike
What will a bullit achieve over the omnium out of interest?
I think cargo capacity is similar