I think PAD handled the relationship very nicely and brought closure to it. But that's just me. I'm one of those few people who enjoyed Imzadi II more than Imzadi.
I very much agree with the first part. I am not sure if I am indeed in a majority but nevertheless, I am not a fan of Imzadi II. PAD wrote Worf the way he was in late DS9, very accurately but also, to me, at his most annoying. More than once I was forced to ask myself, what IS Deanna seeing in this guy!?
Fortunately Worf is much more bearable in later books. In many cases I even liked his parts in them.