Should Nurgle have mountain climate?

Playing as the big T for a second time the way CA and the lore wants me to. Plowing through the mountains for the glory of grandfather. As people have discussed already though that's almost all orange climate and just not worth building up at all. Two current solutions I have is to sell all of the land afterwards or install the climate mod making it suitable. What is everyone's thoughts on this because I believe Tamurkahn has a rough start if played the way they intend.