No, there is no consensus. A consensus at this point would not be informative. Because of the emotional/religious nature of the subject, and because the technology to implement SENS is far away, people's positions on SENS reflect their personal values more than their scientific judgement.
I observe that:
I don't expect SENS to be a complete solution. It doesn't account for nuclear pore degradation, or for some bizarre diseases of people over the age of 100; it doesn't address what happens to our identity as we replace neurons. We'll come up with better solutions as we get closer.
The overall engineering approach/attitude is a good one; and if we had spent the money on SENS research that we spent on bailing out the economy ($10 trillion, according to George Soros; that's equivalent to 2,000 years of US cancer research funding), it would be more than enough to cure aging shortly.
