.. Vrook, Kavar and Zez are all just sat twiddling their thumbs for no reason
I've explained this before. If they drew attention to themselves, then they'd get killed by Sion, or more likely, Nihilus. Every time since the purge began that the Jedi showed themselves, they got wiped out and they didn't even know what was hunting them. What were they supposed to do?
"There is something going on in time and space, and beyond time and space, which, whether we like it or not, spells duty." -Winston Churchill
"For of all sad words of tongue or pen, The saddest are these: 'It might have been!'" -John Whittier
"Apathy is death." -Kreia