I'd rather have a 690 Enduro than something another 50lbs heavier.
I don't find the 690 to be that buzzy as has been mentioned by 1 or 2 guys, but I do agree that the gearing is either good for pavement or good for dirt, not both.
I wonder if KTM has ever though about a dual range transmission like the old Honda's from like 30 year ago?
That seems like THE solution. 65 horsepower, 315lbs, $10k and boooyahhhh!