User blog comment:AustinDR/Thoughts on Scar/@comment-31214635-20170814230243

With regards to how he defeated his Lion Guard, I think he likely covered it up. It's possible that it only came to light after he killed Mufasa. Or, that someone saw it but didn't have the courage to let everyone know until later.

As for 'I Have a Plan', I don't see where he states that he plans on killing everyone. Simba? Sure. But I think the fiery areas are just visuals. What he actually says is 'All the Pride Lands' lush terrain will again be my domain', which suggests that he plans on merely overtaking them again. Since he's a volcano, that might include somehow 'moving' his lava flow into the kingdom, but really he just wants to rule over it again (unless I missed a quote).

I do agree that the song isn't anywhere near as powerful as 'Be Prepared'. I really think that, songwise, the show has run out of steam already. Even 'Tonight we Strike' was more powerful visually and the song felt more powerful, but that could be because it was just a throwback to 'Be Prepared' at the end.