I don't really think that removing an entire advanced class is the way to fix an advanced class. .
This is BW we're talking about. Think about it- when they couldn't figure out a fix for the double instant dark infusion proc for sorcs, what did they do? They removed it. When consumption was being overused with the free procs, what did they do? Make consumption so bad- healing sorcs all respecced to lightning effusion for pvp because it's that much better for force use.
I wouldn't put it past them to remove the AC. I mean- they nerfed tracer missile into the ground despite at the time every good player saying it was extremely easy to counter, and all the whining coming from people who didn't use interrupts.
Besides- pretty sure most mercs by now have rerolled a marauder or jugg and are lolsmashing their way to easy victories.