Holly and Sidwell

What is the point of them coming back to PC with the diamonds. There are so many unresolved storylines- John Cates murder, the cringy Drew and Willow non affair, Sonny and Ava"s custody battle, Lulu's liver transplant. TJ and Molly' will they stay together, will they break up situation, Portia's tampering with Heather's test results. Do we really need this con woman espionage storyline thrown in there. I really liked Holly back in the day but not loving her here How do others feel about this