I am not an artist either to be honest. Yeah, I do not want a laptop-sized iPad because quite frankly my laptop is better at being laptop than any iPad (I know shocking ).I've been down that road too--I do like taking handwritten notes, but I'm not a very good artist. Apple Pencil + the Serif apps is an absolute dream though, especially on the 12.9" model. But more often than not, the 12.9" was too bulky for that. And then if I switch down to the 11" for that purpose, now I don't have my laptop-sized iPad.
To be honest I have used both 1st and 2ng gen Pencil, the 1st sucks. Mini would makes sense but once they move to the 2nd pencil IMO. At least this is my preference.I had to come to terms with the fact that the overall more versatile device is the iPad, but the more efficient device is the Mac. I think what I'll probably do at some point is get a new mini that I can use with Apple Pencil, but I'm not doing that until they redesign it. Right now it's the same design from 2012, which does not interest me at all.
I find the 11 inch good balance though. It is big enough for me to read books, brainstorm and scribble with the pencil, and to comfortably hold it in bed. However I really do go to my laptop for long sessions of work where I hook up external monitors and all that.