Agree, and why not put Komi on 4th line, can't do worst than Juneau or Perreault on 4th line. Langdon-Dowd-Komisarek would be a line that I would start to think about if I was CJ.
Because that'd be a miserable fourth line in terms of puck possession. They wouldn't be able to maintain control of the puck for more than 5 seconds in the offensive zone.
In the playoffs, you need four lines to grind it out. The fourth line needs to be capable of keeping the puck deep and tiring out some of the opposition's defense. Ideally catching Gonchar out there and targetting him with some big hits.
A fourth line of: Langdon-Begin-Ward could be successful in this capacity. But I'm not sure if I'd like Langdon to ever be out there against Thornton's line, and I'm certain Julien wants Begin to be out there against the top B's line.