Yeah...I think the biggest hints so far is the Qui Gon quote he said to Wim, & then the way he snapped for a second then caught himself when Fern said that leaving a man behind "wasn't the Jedi way".This is why I’m loving this show. The sense of adventure. I also really enjoyed the Mandalorian when it debuted for similar reasons. I kind of like the lower stakes where anything can happen. Both shows also had a lot of traveling to other places and exploring the larger galaxy, which I love.
Im kind of also hoping that they keep Jods backstory a mystery. I wont be upset if they chose to reveal it, but hes been a really unpredicable character at this point, which Im really liking. Ive gone back and forth through the series thinking he’ll turn good in the end or just be bad. Seems like the villain of the series now, but it was a good build up. I also just like when we are left to form our own theories for details that dont have a direct impact on the story (as opposed to having theories about plot details).
Just a nice, breezy show that has really surprised me.
If I had to speculate, he was a Padawan who was in the training circle of Jinn or possibly Dooku, possibly with some new Master who was either legit abandoned during Order 66, or FEELS like he was abandoned. Probably not, but as you said, the show makes it fun to speculate.