Having a single sequencer being able to control the state of the entire bus would be cool.
the high-bandwidth sequencer could read 4 bytes off the tape at a time and set the 4 quads of the bus to the respective byte, or the creation of a high density tape which would have 32 punches per column.

This is already possible by syncing 4 sequencers and offsetting them on the bus with an external clock, its just a bit cumbersome.

If a high-density tape is placed in the normal sequencer it should either read only the first 8 bits per column or not be possible
putting a regular tape into a high-bandwidth sequencer either should read a tape at 4x speed or act like a basic sequencer by outputting to the first quadrant of the bus