The timing of the Draft Lottery ‘in about a month’ does make sense seeing as WWE wanted to get through Backlash first and then really shape up the rosters.
The top guys rumored to move are Shawn Michaels to Smackdown and Kurt Angle to RAW. If HBK were to switch, they could turn him heel to feud with John Cena which would only elevate him further. As far as Angle is concerned, he’d do a feud with Batista after his program with Triple H ends. Just to note, last year none of the guys (excluding Triple H) were told of who would be switching brands ahead of time. If HBK and Angle are the top switches, they would likely be notified ahead of time due to their tenure in the company.