I figure the spot a guy like Zack Mitchell would be competing for would be where a Nate Thompson/Michael Amadio would be slotted. He's most likely destined for Ontario, but he's behind those two in the pecking order for fourth line center options.
As for Etem, he's battling for a fourth line spot on the wing since Brodzinski hasn't really proven himself quite yet. Vilardi making the roster would've pushed Trevor Lewis down to that spot, but Lewis is going to be the third line RW, which means most of the competition in camp is for the last few spots on the fourth line or the #6-7 blueline spots.
The top three lines are already set with Kopitar centering Kovalchuk and Brown, Carter between Pearson and Toffoli, Kempe alongside Iafallo and Lewis, and the fourth line leftovers are Clifford, Thompson, Amadio, Brodzinski, Etem and Mitchell. Five out of that six will likely make it.
And on the blueline, with Forbort injured, it appears Doughty, Muzzin, Martinez, Phaneuf, LaDue, Brickley and Fantenberg may make up the top 7, with MacDermid vying for a spot should they wish to have a physical presence back there.
Aside from the possibility of Jaret Anderson-Dolan making a push to earn a roster spot, I'm not expecting too many surprises. Most of the roster is set.