Can I ask why target 3.7 instead of 3.8? According to kernel.org the 3.7 release is already end-of-life.
3.8 had not matured enough at the time. It's just now getting there, so we're currently testing 3.8.4.
As for what additional to include (hopefully I am not too late already).
It is a bit too late, I'm afraid.
The nouveau driver is far too unstable to ship with confidence. The answer to that is the same as staging quality modules, welcome in the repo if contributed, but not included in the official build.
On HyperV support, since it was now out of staging, it was enabled for testing. Seems HYPERV_NET was missed as it would have needed going back, but it appears HyperV allows emulation of "normal" or legacy network cards too.