Why did Yakov not request the older daughter?
Tosfos ha'Shalem (2): He realized that Leah was destined for Esav. He thought that if he marries her, Esav will be angry also for this.
Tosfos ha'Shalem (17:2): Rivka gave to him a sign, that his Zivug would resemble her.
Lot's daughters were called Bechirah and Tze'irah. Why are Lavan's daughters called Gedolah and Ketanah?
Tosfos ha'Shalem (3): Some of Leah's descendants will get great (permanent) gifts, of Kehunah and kingship. Rachel's descendants (Yosef and Sha'ul) received temporary kingship.