Julien should never be considered for playing 2B (I don't care if they think his bat plays there). Then Lee wins 2B by default. But is he the right person to play there? IMO Lee's best position is 3B, he's also 2nd in line at SS & 2B is his 3rd position. that IMO makes Lee more valuable as one that is the 1st choice in subbing Lewis & Correa. 3Bmen need to have a strong arm, Miranda doesn't have one to begin with & now with shoulder surgery & related injuries, his consideration at 3B should be removed last season. Just to get his bat in the lineup should not be the reason to play him there.
IMO Martin is definitely not needed in the OF. They should clean his slate & try him at 2B, if he shows promise at 2B & able to turn his hitting around so to beat out Lee let him start at 2B. It's an unfair opportunity but least it's an opportunity & could make our team better. If Lee fairly beats out Martin then let him start at 2B while still playing plenty of 3B & SS. & send Martin down to AAA to focus on his hitting & 2B, along with Julien to do the same but at 1B.