I was under the impression Ellis is meant to have elite fitness and is meant to be fairly quick? I'm surprised he doesn't use these skills to burn the opposition off on the outside.
l will answer that for you. He is so fatigued running backwards, sideways that he is extremely fatigued. Take a look at how fatigued Rance was. That lad is simply over doing it. When it comes turnover time he don't have the energy to fight someone like Walker or chase a elusive Betts. B.Ellis like to over use the ball. C. Ellis will settle after a few more games.
l still remember many years a go a member wrote "We must draft Eddie Betts" We took Trent Knobel 
He was spot on as every time Betts gets the ball. He kicks a goal or he set a goal up. That stayed in my head that post but l can't remember who wrote it.
And
Cause he has no left foot he closes off 50% of the options, usually the more direct ones
The other team knows this,
Hence forcing him to kick side ways / backwards. Givin te opposition time to reorganise on the correct defensive position
Same as troy sideways Chappy; having no right foot and not being able to kick forward , when forced to the non preferred side
Half the time they try dinky kicks on the favoured side, on the outside of the boot... Which either go to th opposition or hang in the air for years. Cause they are fairy unskilled at it , unlike say dusty who can pull it of occasionally
