Burton Richter, 1975 Nobel prize in Physics for the discovery of the J/ψ meson, speaks about the need of a new linear collider for the measurement of Higgs boson branching fractions in a video on Facebook (as soon as I understand how to paste here I will!)

Richter has been a fervent advocate of electron-positron machines over hadronic accelerators throughout his life. So you really could not expect anything different from him - but he still does it with all his might. At one point he says, talking of the hadron collider scientists who discovered the Higgs boson:
"Clearly they made it work because they have found the Higgs, but precision measured branching fractions requires that you get a lot of them and that the system be clean and it is much easier in e+e-."
That looks like an innocent remark, but if you know the story you can't avoid seeing the understatement behind it... Deep in his bones, Richter feels that hadron colliders cannot do good physics, and it is only through the bit he cannot ignore - the Higgs discovery -  that he is brought to acknowledge that they were good for anything.