Both phones use their default names ("Jeff's Phone" and "Paula's Phone"). She and I are both on the same Zune version and phone OS version, and both phones (and my notebook) use the same WAP. Until my recent upgrade to Win 8 on my computer, we were both
on the same Windows version as well. Our computers are managed domain members (I'm an IT consultant) so there's a high degree of uniformity across our various computers. Hers syncs and always has. Mine used to, but doesn't any more.
There is ample precedent for later fixes addressing problems with earlier fixes on all OS's, including Microsoft's. Not to say it's absolutely going to happen, here. But
if the problem is due to a cause that has been identified, and
the problem is widespread enough, the possibility certainly exists that they will push a fix in 7.8. MS's telemetry is certainly telling them there are lots of C00D07C9 sync errors out there.
Failing that, every once in a while, you get lucky, and whatever the problem was gets overwritten or re-initialized during an update for some unrelated reason, and you get a second chance for failure or (hopefully) success using the same bits.
To me, then, it's very much worth the wait for WP7.8 to avoid a hard reset on a device whose contract is a few months away from expiry, since wireless sync is a big plus, but not essential to use of the device.