I just finished my first guitar build and have been searching for answers to this question too; worried that my top is too thick.
Came across this interesting research at http://www.speech.kth.se/music/acviguit4
Have a look at chapter 6 The Function, Tone, and Tonal Quality of the Guitar, page 23 section 6.7 CONSTRUCTION AND ACOUSTICAL PROPERTIES.
Page 31 shows their conclusion:
The experiments and calculations presented have shown that the bridge has the largest influence
on resonant frequencies and vibration sensitivity levels. The thickness of the top plate seems to
be the second most important, especially along the edges, and the width of the fastening is less
important than the thickness.
Any folks have thoughts/ideas on bridge design (size, thickness, shape, etc) and affect on sound?