I was gutted when Tiffany died, because I had thoroughly enjoyed her story.
Her relationship with Grant was compelling EastEnders viewing. This was when the show still did stories of relationships rather than plot lead stories. I think part of the sadness of Tiffany's death, was that she could have returned and perhaps more story was there. But then again, her exit preserved the memory of a fantastic time in EastEnders history, which was the Grant/Tiffany years.
I don't feel as gutted for Ronnie and Roxy, because I feel their time had come. There was nowhere else for them to go. They went out as they came in, in epic fashion! Their departure will shake up the Square as much as their arrival did back in 07. I'm sad to see them go, but ultimately it's nowhere near doomsday as some are making out. It's another era we must say goodbye to, in order for a new one to begin.