I dislike Louis and his treatment against Satella, through his own twisted ways he actually cared for her, but i still don't approve of this, even though love can be expressed in some of the most twisted ways imaginable.
However this is a fitting fate for Louis, perhaps this will give him a chance for him and Holly to make up and start a relationship like a true pandora and limiter.
While yall think that Satella should have let Louis die, it wouldn't be right to just let him die, even Kazuya doesn't like the thought of that happening, so saving both him and Holly was the right thing to do, but i feel bad for Holly to.