So You don't think there might be a place for an XC with a Bonneville motor? The start of your post sounded like you got what I meant, "torquey motor, handy in off road riding."
I dont particularly like the 800 triple, too touchy, especialy on a dirt orientated bike. Probley good for the standard Tiger 800, or a sports road bike. In my opinion.
Don't know where you read the question, would it keep up with a water cooled triple.
I ride my Bonnie on dirt roads, mostly what we've got here. that and crap tar. Needs some longer travel running gear though. that's why I was looking at the Tiger XC. The Bonnie motor is great an if you need more power than it give's out then you got bigger balls than me.
All in all it's just hyperthetical, just a subject to throw around, doubt if any one at Triumph will be reading it and run away and build one.