A popular Legends character emerging from the Dark Forces and Jedi Knight games is Kyle Katarn. One of his feats was teaming up with Jan Ors to successfully steal the plans for the first Death Star (well, if you as the player didn't muck it up).
Now, it seems clear that Rogue One main character Jyn Erso is at least in part an homage to Jan Ors (although this has not been confirmed yet, it seems).
Likewise, it seems like Cassian Andor from Rogue One could have been inspired by Kyle Katarn, but the naming is less obvious here. Even if he was, my question is:
Why wasn't Kyle Katarn explicitly used in Rogue One?
Obviously, the new Star Wars continuity is not bound to use anything from Legends canon. But still, Katarn was a popular character and I'm sure some fans must have been disappointed not to see him brought to life on the big screen.