re which karate model im using, of course Victor you are right - there are many, dependent on time and lineage, even to different masters reasons to train.
So my awnser is one that is unfolding Victor................
Im particulary thinking of the karate model that doesn't involve working in an extremly unrealistic manner, with poor Bunkai that simply doesn't make any real sense.
Sure it is a 2 man drill to a point, but it is not taking into account effective combinations, angling, delivery distance, actual natural response or set up etc etc.
Im all for literal Bunkai as a literal study and skill development tool, im all for 2 man 'fixed' work, I use these methods in my dojo.
but I just don't see the benefits of working a whole kata against several 'opponents' stepping in with a poor oi tsuki (thats programed to miss anyhow

).
Lets Chew the fat on this one, I may come around to seeing where you are coming from. But proberly won't..............