If it’s not a lot of work for the devs, yes. But it’s pretty easy to just build a little larger, it only locks in a + shape anyway so 4 adjacent blocks I think. Open storage is an exception where it works on a larger area.
I’m afraid the current one locks more than that. it locks in a 5x5 area and 3levels back (if you include the level that is flushed with the lock). I worked all this out when I was setting up storage units to sell.