Stop the press!!! *sirens blasting* *lights flashing* *handsome shirtless firemen rushing to the rescue*
While I agree with the spirit of what you're saying, both tools are necessary in the Sikhs toolkit. I think you're saying that grace is not something that is perceived or understood with the rational, intellectual, carefully discerning
bibek budhi, but with the intuitive understanding of
surat.
We should be careful to encourage people to 'stop thinking', because rational thinking and behaviour is really what separates Sikhi from practically all religions on this planet so far.
I'm sure this is all what you meant, but just for clarity I thought I'd spell it out. For other future readers.