Here's 2 very off the wall:

1. Check eBay for clamp-on dt shifters....Mavic/simplex retrofrictions, for example, shift like silk, last forever, etc. This would leave a pair of redundant stops showing. Also, assuming 10 speed, that's pretty short throws with much room for shifting error and lotsa trimming. DuraAce indexed bar-ends may not be zoot enough for the LItespeed, but they work well. Your mileage may be more important than "the look".

2. Aerobar.....I have a troublesome wrist and long rides with time on the aero bars gives my hands/wrists a break.