Another reason I prefer the ambush is that it could very well make the battle go faster with less danger and less collateral damage. It's a roll of the proverbial dice, relies on factors we can't predict and on Li Suyin/the Piper creating a "moment" for us, but when you consider that our battlefield defence art that we'd normally use to limit allied damage is a yin art and off-limits for this clash? It's the best avenue open to us to limit damage taken- leaning on Li Suyin's preserved reserves in order to strike a decisive blow.
Taking out the liminal-controller speedster should also simplify our final advance on, and sealing of, the breach. I don't like the idea of leaving an enemy in play that is potentially capable of retreating into impurity territory on the other side of the breach and "recruiting" aid to harass us while we're actually closing the hole. Heck, we're already seeing that behaviour in its current assault. And we have no guarantee that all of its reserves are limited to this side of the breach.
Neutralizing an enemy commander is almost always a sound priority. I don't think the trade-offs we need to treat it like one substantially threaten our interests.
Taking out the liminal-controller speedster should also simplify our final advance on, and sealing of, the breach. I don't like the idea of leaving an enemy in play that is potentially capable of retreating into impurity territory on the other side of the breach and "recruiting" aid to harass us while we're actually closing the hole. Heck, we're already seeing that behaviour in its current assault. And we have no guarantee that all of its reserves are limited to this side of the breach.
Neutralizing an enemy commander is almost always a sound priority. I don't think the trade-offs we need to treat it like one substantially threaten our interests.