Note: It seems that I didn't initially put the GetIsID check for Kells for the speech checks, so that if you already talked to Kells, everyone is saying the line which should point to the speech check. The new version fixes that. Terribly sorry for the inconvenience.

This mod changes Tactical Thinking into allowing a peaceful resolution. Now you don't have to destroy the Railroad to progress the Brotherhood questline.

Talk to Kells as normal and choose either "Do they all have to die?" or "Why is the Railroad such a threat?", which gives you a variety of 3 very hard speech checks. Pass one of them and he will reluctantly end the quest.

Known issues: If you exit the conversation with Kells prematurely, he will only give you the 3 speech checks to choose from, for the rest of the save until you pass them. So I'd urge you to save before speaking to Kells.