23rd Oct: It's time for the Second TV Tropes Halloween Avatar Contest! Details here
Homura will discover that Ultimate Madoka is the best possible ending.In the game; Homura will be able to jump from Pre-Anime to Post-Anime timelines upon "unlocking" them, and even if she's able to save all of the cast and beat Walpurgisnacht, the very nature of Puella Magi/Witches means they don't have long to live anyways. Even if she does so and prevents Madoka from becoming a Magical Girl; Madoka will tell her she doesn't want to be alone when they eventually die/go witch in a few short years.
Homura's True End was one of the canon timeloops.It lasted for a few months, maybe a year... then some catastrophe hit, Madoka was forced to contract and eventually become a witch, and Homura couldn't do anything as her shield was out of sand. Homura had nothing left to do but reset the timeline.
As a Mahou Shoujo, Itzli was a foreignerThis is another interpretation on what an alien is-being from another country.