Do yo think SM should do this?

Do you think SM should have a survival show for their rookies? YG and JYP's groups did well, so do you think it's a good idea?

I asked alot of people, some said that it's a good idea, as they would have a solid fanbase when they debut, and they would have a chance to showcase their talent before debut. But some others said no as they already have a fanbase and the idea is overly used...

So, what do you think?