Eurogamer's interview with Mac Walters, who was a writer on all three games in the Mass Effect trilogy before becoming creative director of Mass Effect: Andromeda and then Mass Effect Legendary Edition's project director, makes for a good read. Going all the way back to the series' origin as "Jack Bauer in space", it's a revealing history of BioWare's work on Mass Effect.
Some of the most interesting material covers Andromeda, which Walters joined late. He'd been working on Anthem along with most of BioWare Edmonton while Andromeda was being developed by BioWare Montreal, previously a support studio responsible for most of Mass Effect 2's N7 missions, Mass Effect 3's multiplayer, the Omega DLC, and so on. Only after Mass Effect director Casey Hudson left BioWare in 2014 was Walters moved over to work on Andromeda, so his answers mostly focus on the later stages of its development.
