Almost every design has some amount of symmetry and patterning
F350 can almost manage some kinds of symmetry when there are two distinct parts, but even then, if we're trying to design identical self-mating parts, there are a lot of operations that don't work, and it is trivially easy to break the symmetry.
Please please please PLEASE make real symmetry and patterning (or / better copy or improve upon the programs that handle design intent inference in parts that are partially symmetric)