Just switched out my mainboard due to bricking my previous one. So far, everything seems to work just fine (which is surprising, given that I could have sworn I felt a crunch when plugging in the eDP cable, but the display seems to be working, so.)
I know that my new mainboard has PTM, which I remember needing to be broken in. I already subjected it to compiling a large C# codebase by accident when updating my Linux installation. Anything else I should do?
You could send the old mainboard to me. 
Maybe. The part that connects to the fingerprint cable snapped off due to an error on my part, so it can’t boot. It also still uses the old LM paste, which is in a pretty bad state.
If that still sounds like a good fixer-upper to you, then tell me and I’ll see if I can sell it to you. (I can’t give it away for stupid bureaucratic reasons.)
Regarding your original question, only thing I can think of is updating the bios/firmware if it needs it. But I would actually be more interested to test/leave it on a very early bios if it came with one. Seems like everything 3.05 and beyond (when they added the battery saving features) totaly FUBAR’ed the bios and they have not been able to fix it since.
It came with 3.05, but I moved it forward to the latest. 3.05 had a nasty bug with my machine where it would aggressively throttle if I ever unplugged the laptop, with it only fixing itself upon a reboot.