Is there any chance, at this juncture, of having the Slave I go into cloaking device mode (like how it's done in Star Trek) at the end of his approach to the Falcon, to better explain why he wasn't detected when he followed Han all the way to Bespin? :)

I mean, since the technology was at least mentioned to exist, they could have least showed how it worked. Unless, the technology only hides the presence of a space vessel and not make it actually disappear, and this was what was demonstrated with Boba Fett's ship, anyway. I never really read any of the EU concerning the Slave I and so I don't know if they ever explained that it had a cloaking device. But it does make sense that he would, though. ;)