Excuse me, but what IYO is
their view of perfection?
All they have stated, AFAIK, is that they wish to add the distinctiveness of pretty much everybody to their Collective, increase the quality of life of the assimilees, and become more powerful in the process themselves. That doesn't much define their views on perfection.
The Queen likes to be a loose head, and thinks that Omega molecules are pretty cool, but from this it doesn't follow that every Drone should be bodyless or become an Omega molecule ASAP. The Borg seek perfection, that much they say - and they bolt technology to biological bodies, that much we see. So it should follow, straightforwardly enough, that perfection for the Borg is a cybernetically augmented body.
As for the claim that such a body would need to be a Six Billion Dollar Plus Value Added Tax Man, that's absurd. Six Million Dollar Man didn't fly at hypersonic speeds, so he already fell short of perfection in one field. He didn't look like Johnny Depp, so he fell short in another field, too. He didn't play the dulcimer with any skill, so he was imperfect in yet another field. And he didn't even seek
to improve himself in those fields - because they were irrelevant to his idea of bodily perfection, in this case physical prowess important in being an all-around hero and rescue engine.
The Borg aren't fast runners, but that's irrelevant to physical perfection. They don't have
to run, because they are invulnerable. The Borg don't dance like Bruce Lee, but again, that's irrelevant. If Bruce Lee wanted to play rough with them, he'd simply be snapped in half. And neither Carl Lewis nor Bruce Lee would be able to compete with the Borg on real
survival skills, such as the hability to hack into starships.