There were some other things brought up in this thread, which I'll address:
1) The Borg didn't kill anyone from that world they assimilated in BOBW. The wording was that they "scooped" everything off the planet. The away team beams down there and we see a giant hole where a city was. So what dead bodies are you (Zar) talking about?
You're right there were no bodies, but then again Guinan didn't say there were bodies either, she said there was "little or nothing left". This was the first clear hint in BOBW that it was in fact the coming attack that Guinan predicted. In QH they merely scoop out part of the Enterprise's hull, for "information gathering". In the real attack they scoop up an entire planet at once, just like Guinan said happened to her people.
There shouldn't be any bodies.
Seven, Hugh, Picard, Icheb and the Borg kids, the 3 from Survival Instinct, Janeway, Tuvok & B'Elanna were all Borg and all still kept very much alive.