Who is the best leader bloodline?

[Kiv]

Who are some of the starting factions with the best leader for his bloodline to inherit good traits?

[Steward Denethor II]

I did notice in this mod that the traits are more mixed; they always have some sort of negative effect. I found the Venetian and Pisan traits to actually be bad due to reduced Command. I think the Aragonese and Sicilian traits are overall pretty good, as well as Jerusalem.

[Jurand of Cracow]

Indeed, some of the bloodlines may have unwelcomed effects for your game. Eg. the Polish one - +1 Dread negates the Chivalry you want to get to spur the growth in your cities.
Actually, sometime ago I had the plan to the review the benefits of the bloodlines. We may discuss.