For me personally I'd like to see Shamy have some simple background story lines where they're doing fun newly engaged couple stuff like shopping for a new sofa ( I mean, come on, would the world come to an end if they changed the damn couch!! ) or a new bed or perhaps have fun rearranging the apartment furniture. Nothing major or life changing but would still feel like they're taking small steps forward while working toward the more significant milestones like the wedding.
What I don't want to see is Sheldon being jealous of Amy's work when at the end of last season he told her how proud of her he is and how he supports her in everything she does. Or Sheldon telling Raj that he doesn't hold Amy's hand while watching a movie when we've seen him take her by the hand and lead her to the bedroom to " engage in frenzied love making " !!
Some of these " jokes " this season just feel , IMO, like they're taking steps backwards.