Several years ago there was a notice of proposed rulemaking that would have mandated magnetic media filing for CTR filers who filed more than 1,000 forms per year. It was dropped. I don't know of any recent announcements that resurrected that discussion.
Just a personal opinion, but I think it is more likely/logical that they would require SAR filing to be done electronically. There are fewer forms filed, electronic filing of SARs imposes no appreciable burden over paper filing on small institutions, there is greater urgency in getting the SAR information into the data base and the Inspector General specifically recommended it in a recent FinCEN audit.
In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.