You heard of thermal runaway, right?
I call that "upgrade runaway".
But at least you have learned an awful lot about the machinery, and you can answer the question of "Just how far can I take a RepRap?" with authority.
My (rather obvious) reason to go with this model rather than an Ender 3 (or 3 Pro, which I was considering): I figured that, by the time I'd printed / bought all the relevant upgrades, I'd probably have spent more than the quoted retail
amount for the CR6 SE, and not got the fancy auto level, colour touch screen, filament runout detector, carborundum build plate, wider Y axis carriage, dual Z drive and belt tensioners (before we even consider the 32 bit board / TMC2209s / spare nozzles and PTFE tube). Given I am paying the early bird price ($319+shipping), I'm very happy, and don't forget that the Y axis would probably be expensive to retrofit to an Ender 3. Dual Z screws too?
Hey, that's an interesting question. How much would it cost to upgrade an Ender 3 Pro to CR-6 spec? Not including the increased build area..?
Sure, we want an all metal hot end / direct extrusion, but what the hey, you can't have everything for $319. I am quite happy with the 32 bit board + 2209 drivers. Nozzles and PTFE tubing, meh. But special colours (for the $5M stretch goal) I really couldn't care less about. The machine looks great in black, even if it will take some dusting.
Apparently there will be an announcement this weekend regarding the CR6 MAX. I may jump ship if it's not too much more (and really, it shouldn't be - its just longer aluminium profile bars and a bigger build plate, plus software). The only thing I would be concerned about is additional ringing caused by the bigger frame, and that can be braced without too much bother.