You can buy fairly powerful desktops configured with just the on chip graphics or inexpensive business class graphics cards.

I'll add a '13' to your list.

13. Bluetooth is evil, and any desktop I have seen with Bluetooth had it on a mini-pcie card, and could be yanked. My desktop is always cabled via 1Gb Ethernet, so if yanking the BT also loses the WiFi, I don't really care.

If you are using wireless keyboards/mice, I don't know if the logitech adapters are more or less secure than BT. That could be an entire separate thread.