Richard,
I applaud your creative solutions to contest logging.  I operating in a few
contests around five years ago.  I was faced with  a similar dilemma.  I
wrote a simple macro for the brailleNspeak which would generate the
sequence number for me.  After I entered the logging info on the line I
executed the macro to time-stamp the contact and set up for the next one.
You could search for dups using the find feature of the bns.  It was kind
of crude and required some hand editing before submitting to arrl.

I recall a humorous post on the qrl list a few years ago about contesting.
The jist of it was that normal ham operation was laid back and enjoyable.
But when it came to a contest, you had to roll out the stacked beams,
high-tech geer, computers, dx spotters,, etc.  I enjoy contesting but wish
there were some way to neutralize the high-tech approach.  I'm waiting for
they day when we can have contests done all by computer.  VRU or CW
decoders could sift through the calls, send your response and decode the
guy on the other end.  Once the qso's dried up on a particular frequency,
your rig could scan for a clear spot and start again.  I'm waiting for the
day when someone actually uses such an approach.  Just think, you could
start your automated contest program at the beginning of 48-hour contest,
stop in the shack on occasion to check your score, get plenty of sleep, and
perhaps finish as one of the top scorers.  All without breaking a sweat.

But, from a blind operators perspective, it doesn't seem fair that the
technology gap should take the fun out of an operating event.  But we can
still enjoy contests and making contacts even if we don't bother submitting
logs or looking for awards.  Remember that ham radio is an enjoyable hobby
and any awards or public recognition are no substitute for the next qso.

73
Chris w1gm