If you consider where CETA started and where it ended, the transparent tribunal solved the initial complaints same as with the restrictions on when you can sue. That now the new tribunals are also not good enough is a moved goalpost.
You really think that's true for everyone, or are you just looking at a subset of complaints?
There have been huge protests against TTIP and CETA in Germany and around Europe, and you can't resolve their legitimate concerns by saying "excuse me sir, but by your own logic, you just proved my point".