I am not a MoI vet but medieval English personalities, politics, and military history fascinate me so B&R was a must have. I ran through the 1st St. Albans and Blore Heath scenarios last weekend with an opponent and despite losing both as the Lancastrians I thoroughly enjoyed it. My mounted charge blitz at Blore Heath was a complete disaster (exaggerated by the fact that we forgot the counter charge against missile fire rule) but the session was intended to live (or die) and learn anyway.
Glad you enjoyed it!
1. Leader casualties - If more than one leader is accompanying a unit in a hex that is missile or shock attacked with a die roll that meets the "roll for leader casualty" criterion I assume the correct action is to roll separately for each leader present to determine if they are killed.
Indeed, each leader should roll for their fate separately. Looking at those rules, that could be a touch clearer.
2. Replacement leaders - Rule (5.6) indicates that the replacement leader is placed at the end of that player's next activation phase. Confirming that the replacement leader is placed even if that leader's Battle is not part of the next activation?
Yes, the leader is placed whether that Battle is Activated or not. In fact, it would be impossible to Activate that Battle via Continuation, since it would have no leader to roll for Continuation. The Battle could be Activated via a Free Activation.
3. Seizure - If a seizure attempt fails by die roll the continuing player gets a free activation (6.3). If a seizure negation chit is played however that section of the rules just indicates no seizure attempt can be made and the markers are discarded. Looking for confirmation that a seizure negation chit play does not result in a Free Activation but rather just allows the continuation player to proceed and attempt a continuation as per normal continuation roll.
Yes, the game continues as if the Seizure Opportunity counter was not played. This means that the interrupted Continuation attempt would go forward.
I could make that clearer, right now it is implied, but not stated explicitly.