I've had bouts of battling hot laptop bags. It's almost always been software other than Microsoft or Intel causing the device to wake and start chugging away heavily. Usually some misconfigured security tool or bad drivers constantly sending wake events.
Personally I really like having my device automatically connect to the Wi-Fi when I get to the office, reconnect VPN, get chat and email synced, get ssh sessions reconnected, etc all before I even unlock the machine. It's a great feature IMO, just every now and then there's some boneheaded app that decides 9am is the time to wake the machine and scan every file modified in the last several weeks regardless of the current power state.