They do make universal waterblocks.  If BFL would just put some damn holes in the board.  They make water blocks which can adjust to everything from 28mm to 80mm hole spacing.  BFL just punch two holes in the PCB and people could use any custom cooling they wanted.  It you can't/won't for this board at least consider it for the next board.  Having 2 push-pin holes put into the board would add about $0.02 to PCB production cost.  Everything from third party CPU coolers to waterblocks to phase change and TECs would be possible if they had 2 pennies worth of holes punched into the board.