The Hyper-V and Connected Standby: You can't have both at the same time. The workaround is here:
According to some sources the Hyper-V team is aware of this situation an presumable working in a fix.
WLAN and Sleep Mode or Connected Standby. Most of the problems have been fixed by Microsoft updates. Still unresolved the case of rooters like the Airport Extreme that share the same SSID in the 2.4 and 5 GHz bands and the Limited connector error that appears on those devices with Hyper-V enabled. The workaround for both cases are described in these two pages:
Heavy heat of SP3. For me, the SP3 i5 4Gb that I own is performing at the temperature that I was expecting from this processor. The so called "throttling" issue, most of those reporting the issue are gamers pushing the limits of these machines. I would say that an enterprise user, 95% of them, will not be affected by this "issue". New potential owners should understand the machine limitations and understand the challenges that having a body design like the one in the Surface PRO 3 represent.