I think this will cause more confusion than benefit.
You are suggesting something akin to the BFC INVERTNEXT command?
Also what will this benefit other than having one prim file instead of two in the database (which likely will not be possible anyways)? As you mentioned, this will likely not work for old files, which would require a rework.
0 COMMAND something
1 16 0 0 0 1 0 0 0 1 0 0 0 1 4-4cyli.dat
is longer than
1 16 0 0 0 1 0 0 0 1 0 0 0 1 4-4cylo.dat
You are suggesting something akin to the BFC INVERTNEXT command?
Also what will this benefit other than having one prim file instead of two in the database (which likely will not be possible anyways)? As you mentioned, this will likely not work for old files, which would require a rework.
0 COMMAND something
1 16 0 0 0 1 0 0 0 1 0 0 0 1 4-4cyli.dat
is longer than
1 16 0 0 0 1 0 0 0 1 0 0 0 1 4-4cylo.dat