I think it's 50/50.
It was definitely a hit in that we were all talking about Kindred for a few years and it increased interest in the books. It probably helped sales in the long run, as the story supported several extra issues.
However, it as a miss conceptually for me as I was tired of the breaking the forth wall and doing nothing schitck before Hunted and the non-threat of his... saving(?) MJ there really soured me. My interest was definitely back up for 'Last Remains' but that also meandered and ultimately did nothing. By the end I just wanted it to be over but was pleasantly surprised by all the clone bollox and the retconning of Sins Past.
I have been picking up the tpbs for the run and will be interested to revisit the whole thing in a year or two to see how it holds up without the incredible weight (and excitement) of expectation.