Not really sure if this has been suggested before, but in Solidworks, you can pattern components, then have the ability to unselect certain parts in the middle of the pattern. So, basically skipping spaces in the middle of the pattern.
This would be a great addition to Inventor. Currently, you have to pattern up to the point of the break, then reinsert only the parts needed in the next segment, then the segment after this one, reassemble all of the necessary parts. So, in a nut shell, I have parts A, B, C and D patterned 4X. In the second and third segment, I don't want part B.
Hope this makes sense.