User blog comment:MegamanZero0002/Total Drama Season 6 theory/@comment-25073839-20140518173731/@comment-7985501-20140518174432

You pretty much hit all the reasons why we worked on this theory based on the evidence from Julie and from what we saw on screen. Lindsay really has no plot without Tyler or Beth(and we know neither would return) so she's most likely not coming back at all maybe for cameos but not to compete. She's pretty much done. Sam's been done the moment he got in TDAS(which he didn't even belong there). No Dakota, no plot. Buh bye Gamechild. Sierra proves she needs Cody for sanity. Without him, no sanity. So nah.

The 5 you have are most likely returning for the reasons you gave out... which was the whole point of this theory.