The worry is his strengths (forehand and volleys) are imploding at the moment. Usually you can count on his ROS or backhand going tits up, but there's a problem when his money plays aren't cutting it.
He did say at Bercy that Rasheed is a long term appointment. I think the aim in mind should be to peak for Wimbledon, which is something he could win with his best tennis over 2 weeks, perhaps the only Slam he could win at the moment.
Yup, Rasheed has a lot of work to do. Jo hasn't played a single great match since his QF with Nole in Paris. If not for an injured and non-moving JMDP in Rome, he'd have 0 top 10 wins this year.
Lots of work to do if Jo is to become a threat again: BH and ROS need to improve big time, confidence needs to be higher and shot selection/tactics desperately need to improve. I hope to see some improvements by the time AO rolls around.