The Mandalorian trailer looked decent. My sole concern is bringing in all these characters may indicate they are making the story more epic - which they need to avoid doing as the small story was a key element in why it succeeded.
yes.. it seems there will be one more ep this season than last for 9, so a little more room. maybe they'll lengthen the eps as well? hopefully..
the characters that are reported to be in it are all connected though- so far, all our "known" characters in that they have been on screen and have a connection, of some type through either the planet mandalore, the dark sabre or being a mandalorian
if they were to try multiple plot lines- like game of thrones, it wouldn't work without longer eps and a longer season
although i am not opposed to them using characters from books or the "legends" bench, so far, they have not done that much-or at all?-- they did it a lot in SOLO. Mostly it has been weapons and ships, imported from those sources into this show and others like CW's and REBELS
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in a few video reactions to the trailer and in anticipation of the trailer, there is rumor that in either this season or the next, the show may have less of Din Djarin and more of others characters, continuing their stories from other shows/films
ex: the Mandalorian could morph into a show about Ahsoka