Based on what iv seen on Jullien he is very hard to judge, the assist for Klimala was out the top drawer but iv yet to see him play a similar pass, in terms of his dribbling it could be on the lower side as you have mentioned.
Majority of Duffy' attributes were from his parent club, his performances of recent could suggest a massive ability drop and a few attributes changed.
Mikey has been out for a while now and hasn't played much football recently to judge him on, the reserves thing isn't a data issue its more how the game decides which squad is more suitable as far as I'm aware.
PPM's for McGregor slipped past me, I agree with you on that and it should get fixed for full release the cuts inside was more earlier years when he was used out wide
Forrest usually moves the ball back on to his right before taking a shot.
Also with RWB id say its still a fairly uncomfortable position with forrest.
Would say that Elyounoussi is no more than competent at playing the striker roll although should be natural at LW
In terms of Edouard, His work rate stat could be a bit too high and will be considered, The Runs with Ball down left must have been done in game as not set in DB