Again and again I say this in TSM threads. No, no one needs to get subbed. No, they don't need a coach of go fly far far away.
I think their biggest problem is themselves, and not just themselves, but working together. They had huge chemistry problem in IPL5 and you can see it. One person's on one page and another person on the opposite end of the book.
Also, I'm not sure how many people watched a stream few days before IPL, but TSM scimmed against RobertxLee (or whatever his name is) and his team and they did horrible. Worst thing is, they weren't even taking practice seriously, and was late for a bit more than an hour.