There is currently little incentive to design a 4WD chassis for a non-performance vehicle. I believe that this should, if possible, be rectified in the future. In the real world, the vast majority of 4WD cars are purchased to increase the vehicle's usability in adverse weather conditions and especially during the winter months.
The most elegant way to do this would, in my opinion, be yet another rating category ("Usability"). This category would also encompass other factors, such as the vehicle's proportions (a very long or wide vehicle limits usability to a significant extent) and be influenced by other rating factors, like "cargo" (in a manner similar to "power" influencing "performance" ... at least I believe that's actually implemented). "Usability" would generally refer to how easy the vehicle is to live with on a daily basis and would naturally be of less importance for certain vehicles types, such as sports- or supercars.
Of course, implementing a new rating type might be a significant timesink...
Alternatively, it would also be suitable to have the "Safety" rating be influenced by the chassis type (maybe that's already the case?) and achieve a comparable effect in this manner. This function, should it not be implemented already, could also be used to have "Automatic" transmissions affect the "Comfort" or "Luxury" ratings, as automatics don't seem to be particularly advantageous in the current build (again, I might be wrong, surely Eric can explain whether or not something like this is already going on "under the hood").
The most elegant way to do this would, in my opinion, be yet another rating category ("Usability"). This category would also encompass other factors, such as the vehicle's proportions (a very long or wide vehicle limits usability to a significant extent) and be influenced by other rating factors, like "cargo" (in a manner similar to "power" influencing "performance" ... at least I believe that's actually implemented). "Usability" would generally refer to how easy the vehicle is to live with on a daily basis and would naturally be of less importance for certain vehicles types, such as sports- or supercars.
Of course, implementing a new rating type might be a significant timesink...
Alternatively, it would also be suitable to have the "Safety" rating be influenced by the chassis type (maybe that's already the case?) and achieve a comparable effect in this manner. This function, should it not be implemented already, could also be used to have "Automatic" transmissions affect the "Comfort" or "Luxury" ratings, as automatics don't seem to be particularly advantageous in the current build (again, I might be wrong, surely Eric can explain whether or not something like this is already going on "under the hood").