LE Leader of the Dawnguard

[HalfAssedGames]

My entire roleplay in Skyrim is about my character essentially taking everything but the throne of the high king, as he becomes corrupted and greedy. Hence most of the factions are joined; Listener, Harbinger, Guildmaster, Grandmaster of the Blades, Arch-Mage, Blood-Kin of the Orcs, etc, etc, etc. However, the Dawnguard storyline, you essentially fade in as another one of their members. I was thinking, you could have an additional ( or it could tie in with the questline itself ), quest that allows you to become the Leader of the Dawnguard, or anything close, as no guild calls you the "Leader", but gives you the highest possible rank anyway. And either Isran dies, or he steps down as Leader for whatever reason, and, as always, runs the Dawnguard Fortress while you're out slaying Dragons.