I totally agree. As much as I love LE's portrayal as Roger, Joshua was my favorite among his many brilliant roles because he was the one who went through the most emotional growth throughout 1795. Also Joshua could be pretty dang funny. Examples: [spoiler]The family is sitting in silence at Collinwood after Millicent and Nathan's wedding. Naomi breaks the ice by saying "Joshua, I believe it's customary to toast the bride and groom." Joshua's response: "Yes it is customary, isn't it?" and says no more. Funny!
When Joshua confronts Angelique when he hears about her and Barnabas' engagement:
Angelique: I only want your approval, your good will.
Joshua: That you will NEVER have!!!
Angelique: I want you to like me...
Joshua: NEVER!!!!
Also last but not least Joshua is mad at Naomi and Abigail for eavesdropping on him:
"Can't I have a conversation in this house without all the women hiding behind corners listening to every word I say?"[/spoiler]
Simply put Joshua was Louis at his best IMO.