A truly good guitar tech is like finding a truly good plumber, accountant, or contractor: when you find one, you pay him anything he wants
because he is truly good.
Sorry to hear of the botched setup, but sadly, I've seen similar, and it's not uncommon. Like mickey-mouse repairs done by mechanics or home repair guys, I've seen my share, which always prompts me either to learn and do it myself so it's right, or else find the guy and pay him to do it right. Frustrating, I feel your pain!
FWIW, a
properly shimmed saddle is not uncommon and when done properly, sounds right. As you've noted, shimmed slip-shod, and it kills the strings' energy transfer to the soundboard. That said, one does not shim Taylor saddles (or for that matter, you don't have to shave it either), as one addresses string height with the proper neck shims, the very beauty of the NT system. You
can shave it, course, as that is the normal route with acoustics, but with the NT proper geometry is achieved through the neck angle. Can you confirm that it was this Taylor dealer did the work?...if so, it's shameful and the factory should know as they offer users recommendations and they provide their "factory authorized" techs the Taylor neck shims to do the set the geometry correctly. Your choice to set the neck or shave the saddle, as either road will yield a proper-sounding acoustic, but I'd go with the NT.

Edward