What do you think Dojo did after Dashi's passing? With the whole original trio gone and the Shen Gong Wu all presumably hidden and dormant, did Dojo just take up permanent residence at the temple he's still at today and spend a few centuries mourning alone there? Or did Dojo go stay with the Northern Cho-Cho he said he descends from for a while?
I like to think Dojo stayed at the temple to watch over Dashi’s students, the first or one of the first generations of Dragons in training. Even though there were no Shen Gong Wu for them to retrieve, he probably had to fly them from place to place to fight the forces of evil, save villages, and stuff like that. He also had to guard the Ancient Scroll of the Shen Gong Wu as stated in the first episode.
But he must have tracked down his dragon relatives and visited them at some point. I mean fifteen thousand years is a long time. However, his closest family is the Xiaolin Monks and his home is the temple. The saddest part is imagining how many generations of Xiaolin Dragons he had watched grow only to have to say goodbye.
How important to Omi is what good Chase said in the other timeline, when he asked Omi to promise to still not give up on changing Omi and Chase's futures together? How important was it to Chase when he said it? How do you think it'll affect their relationship going forward?
Chase from the other timeline seems to have been very close to Omi and the other dragons in training. He even paid his respect to Master Fung by bowing to his statue.
They had very little, but they were family. Chase saw how much the children were struggling and I think he wanted a better future for them.
This is why he was quick to sacrifice himself.
When he tells Omi not to give up on him, he's basically telling him that he wants to be a part of that future too.
I'm not sure how time travel and alternate timelines work, it's pretty confusing, but what I can gather is that Omi is the only one of the monks who remembers good Chase for who he was, and that's why bringing him back matters so much to him. Because if Omi were to forget him too, if he were to give up on him, then good Chase would be gone for good. Omi tries to remind present Chase who he once was or who he could be, to keep the memory of his old friend alive.