Gadgets are fun and not as drastic as a full modification of the Bigsby. People get touchy when straying from "original" because everyone thinks their guitar will quadruple in value down the road...
I believe the reason Bigsby made his vibrato using pins was because at the time of the unit’s design you could not buy strings singly.
If a guitarist wanted a lighter first and second string he had to use banjo strings which have a loop end instead of a ball end so Bigsby made sure that need was fulfilled for both string styles.
Once assorted single strings became available it never occurred to the makers of Bigsby to modify (and simplify the manufacture of) the unit.
There is absolutely NO advantage to using pins vs straight-through holes that I can see but The Suits can't seem to make that final modification. This ain't rocket science, kids. Refusing this simple, time saving, modification seems more based on superstition than logic.. _____________
Here's a gretschpages thread with photographs provided by Paul Yandell
http://gretschpages.com/forum/other-equ ... 260/page1/But that gadget is not so drastic. And the eraser is a lot cheaper.