I would like to bump the request for VMXNET3. In my experience, it is a vast improvement from VMXNET2. I have yet to verify if VMXNET3 supports jumbo frames as yet on FREEBSD (it does on Linux), but ifit does, then that would be one very big reason to support it. I know it is in the latest official vmware tools package for FreeBSD.
I will raise this on the bug thread, but I will also point out that as of 8.3-Beta 2, it appears that there is a significant problem with VMXNET2.