Basically what Archival said. We weren't offered any deal or the like. We're The Guardian that's going to take a little more ''persuasion''. Those three were probably just offered more power, were displayed it's uses, and how it's better than the Light. It's possible we might encounter Lisbon as it's never been stated he died...but it's implied though. Divinity is locked behind Vex Security Code. So either he's good with Vex Tech...or he died and The Vex took Divinity and locked it up. Personally I think they were a trial run of sorts.....a warm-up to us (Our Guardian. Atheons Demise. Crotas Doom. Slayer of Oryx. SIVAs Ruin. Hero of The Red War). Our guardian is different than the rest. We were Chosen by The Light. Out of all the Heroes and Legends...The Light chose US to venture to The Shard to get our Light back. To turn us...The Winnower is going to need quite the argument...and quite the reward.