Even though Windows 10 is not perfect, I have come to like it. I have now upgraded all of my computers and compatible devices to Windows 10. But the more devices I have on Windows 10, the more opportunities to find things that don't just seem to work right.
My most recent upgrade was my Lenovo laptop. The only thing that I have had trouble with on the laptop is the touchpad. Under Windows 7, I was able to have the Touchpad automatically deactivate when a USB mouse is connected. However, under Windows 10, it does not seem to function well. The driver has some issues under Windows 10, and possibly can be updated, even though I have not taken the time to do so yet.
So, be aware that the driver for your touchpad may not offer all of the same functionality under Windows 10. It may require updating the driver if an update is available. I will keep you updated on anything else that seems to not work properly.