Making 'radical' changes to the FISA court is essentially admitting wrongdoing or at least gross incompetence. What Obama said he wants to do now is make it an adversarial process because... it currently is NOT. There is a term for courts that aren't adversarial-- kangaroo courts.
The 'no proof of abuse' claim is also nonsense. The wholesale capturing of everybody's private communications IS THE ABUSE. No human may have seen your data, but it is not in dispute that it is intercepted by government hardware and may be stored for years. They took a wrecking ball to the barrier of needing to submit a warrant to private entities for the data on each individual being investigated so now there is no company fighting on behalf of their users anymore, and instead some secret court issues blanket warrants to capture everybody's data with one decision.
I find it amazing that so many people are fine with every single electronic communication they participate in being intercepted, examined, and possibly stored by government hardware. Not long ago we criticized other countries for this kind of thing.