Not (yet) the case for me... Most of my domains are parked at DAN. I get hundreds or thousands of views each month, I've received 3 low-ball offers on DAN overall, but I've never sold a domain there. My small sales have come from Afternic (and in those cases, the NS had even been pointing to DAN landers) while the better ones have been private transactions.
DAN is a great platform: their innovativeness is awesome, their response time is pretty good, their landers are clean, their commission rates are fair, and 98% of their support agents seem to be amazing. But I think DAN has certain gaps that a partnership with GoDaddy could potentially help fill --- gaps in reach, reputation, end-user trust, and consequently sales, perhaps?
The concern, for me, is whether GoDaddy will kill all the things that make DAN great or just stifle them into non-existence.