- Keyboard (e.g. if Purism can source a keyboard with a middle nub (ala ThinkPad)
This is sadly trademarked by IBM, who gave the trademark to Lenovo, who sometimes licenses it to other companies.
This is unfortunately soldered into the motherboard, so you’d need to buy a new motherboard.
- Motherboard (to support 32GB of RAM)
I think this is dependent upon the sourcing of the motherboard. I’m not sure about if that is possible.
If I remember correctly you can replace this easily, so as long as you get a touchpad that fits the size requirements and works with whatever OS you’re using, it should be fine.
Also possible to replace.
I also made a post here that might help you.