I just installed 10.15.2 on an 81N8 very quickly without any issues (thanks OP!), but on shutdown I see VoodooPS2Keyboard is KP'ing. I remember I have had this problem before in Mojave because of a conflict with Voodoo2IC, and I avoided it by rolling back Rehabman's VoodooPS2controller version.
Are other people not also getting this KP? Is there any better solution?
Also, I see that there is a fake Ethernet connection created from the dummy kext, but I'm having issues with Facetime/iMessage on a fresh install even when setting up a brand new iCloud account. Other people have this working normally on their versions of this laptop, right?