The thing is that almost every Total Drama fan hates those two for being a 'jerk'. Those are the people that you know who've never watched a reality show before. Heather lasts long because she's the character with the most potential. You could make 15 seasons of TD with Heather and Alejandro in themand they won't get boring, whilst characters like Owen, Izzy, Gwen, Cody and such get boring and derailed after only lasting a season-and-a-half on the show.
Let's have a look at the most popular characters, shall we?
Duncan: Done to death, they created a rushed attempt of creating a love triangle to give him some airtime, was a waste of a time. Duncan should have quit the show and never come back in the first place. Why not keep him a mystery? Why couldn't he stay 'escaped' and never come back? That would create drama and give you the idea that Duncan is possibly a retired character or that he could come back at any given time should the circumstances permit. Even how they found him was rushed. Did Duncan really have enough time to go from Egypt to Canada, bring his band and THEN go to London in such a short amount of time?
DJ...Ugh, DJ. He's the character that explains the word 'decent'. However, they focus too much on the animals and his mom to focus on his role of any sort in the show. In World Tour he was a disaster after being decent in the two previous seasons.
Ezekiel? Turned into Gollum. Basicially saying they have no idea what they want to do with him in the first place.
Geoff and Bridgette are now crazed-hosting characters, especially the former. I still love them both but I'd like to see them COMPETE thanks.
Owen, a fart-machine that's been expired for nearly a year now. Same for Izzy, her crazy-nature's been done.
I could go on and on...but the new characters will hopefully be a fresh experience. I'll always like the original characters better, no matter what, but a season/calendar year without them? Almost like a vacation of some sort.