@KF its great fun, I did not expect to enjoy it this much. Completed it in 4 days, just couldn't put it down. Impressed with EA with this. You will enjoy it
I think the best thing they could do is go back to Levine's original pitch for Bioshock and work from that. Infinite sort of wrapped up the concept too well and they'd be hard to surprise anyone if they continued with the same formula - https://www.eurogamer.net/articles/original-bioshock-pitch-document-released