Since we don't know when/if this event is coming back, I made a mad dash with a new titan that I started yesterday to make sure i could take advantage of getting 2 "free" legendaries to jump-start an alt.
Created my Titan at 9pm on Saturday night and by 10pm Sunday night I was level 25. 25 levels in 25 hours! (no i didn't play 25 hours straight, according to bungie.net I played a total of 7hours 47 min 56sec)
Turns out you can really speed through the game the second time around, and these queen's wrath legendaries are extremely useful to boost brand new level 20's up several light levels.