Maybe I'm the only one with this "problem", but my printhead/nozzle is allowed to move (and therefore print) outside of the build plate/bed area (originally it was a prusa-styled dual-extruder printer, so it has a longer x-axis). As such, I believe it would be useful to have a "slice anyways" option, to "force" slicing even when for example a model is outside of the build area, as the one shown in the picture.
Here's my 2-cent worth opinion, again if it's just me who has a weird setup like this one then ignore the issue, but I believe this could be used as a "trick" to print larger objects on many dual-extruder printers.
Thank you