Youll never please everyone on this, I think the rule is a good one.
A guy would be a fool to race their gs1200. Riding the poker run is one thing a real race at pace is quite another.
fact is an XR is a dirt bike never licensed for the street and a Baja killer. that bike is the single reason for the 652 cc rule.
A 690 KTM is not even in the same league as a XR650R The most winning bike in Baja.
I don't really care, Ill race against any bike, but if there are guys getting butt hurt, maybe 700 cc should be the target.