I need it for
Photoshop and the like.
I cant afford (or don't want) to pay for a top of the line machine mostly because of the sense of getting so little for my money once I enter the laptop scene. With no form factor and little in the way of interchangeability producers for the high end market can get away with nearly anything.
So I guess an 'expandable' is the keyword here.
External GPU, maybe one of those wacom digitizer plates if a digitizer screen is too expensive.
You can't run all that on battery though and at some point it all adds up and you might as well get a small form factor PC. What do I realistically have room for in my bag ?. I guess one 'thing' other than the laptop.