Honestly only room for improvement here. The OG writer for ME wrote ME1 & 2 with ME3 being a guy who supposedly squabbled with him over details and abruptly changed course and retcons, and some even trying to put some of the worst ideas of Andromeda as stuff he passed on for them to use (note: this last one is mostly speculation without real proof to best of my knowledge)

Recent, last 10 years or so, Bioware games have not had the quality of writing they were known for in the 90s and 00s, with some charitable takes on TORs overall writing as being very shotgun approach and seeing what sticks and the fans react well to rather than a very clear end point in mind from the start.