Yeah I know we cannot solder Nichrome...makes it a PITA to connect. Maybe a job for a
capacitive discharge spot welder. The other issue with Nichrome is the heat source is like a point source..it's not spread out like the thin film heaters.
Although this could be a good thing as it heats toast ok!
The other thing with Nichrome is I usually needed to double up a couple of loops of it to get the required resistance which again is nothing wrong just fiddly to use.
But as for +'s for Nichrome...you can custom make a heater to fit exactly where you want which makes for more efficient heaters.