Just my two cents. I think how thick you make your bridges s/b a function of the type of wood the bridge is made from. I believe most of us ( maybe ) try to use the stiffest wood that is also the lightest yet strong enough to handle all the stress. Sometimes we use different bridge woods for asthetic reasons, other times at a customers request, and still other times because we think it will sound better. Just like Bracing I can't see how you would make every brace the same, everytime, unless you were using the very same tone woods and tops and even then they would have differing qualities that would require them to be "tweaked".
So while I cut my bridges to a "standard"/ starting point I thin them to individual needs at hand. We also must consider how much of the saddle is in the bridge
(50/50 rule works for me...so does 60/40...that's 60 percent in .)Then we must consider the break angle of the strings over the saddle. too little break angle you lose tone and power( that's what Master Repair Man Dan Erlewine said...I believe him!).
I also slot my bridges after gluing them on because I don't know the optimal position of the saddle for intonation( I use the Buzz Feiten System on all my guitars)until I string it up and set the intonation ( I used to use a false saddle...now use the S.M. intonation jig). Then I mark it off and slot the angle and width. Both of which change on every guitar! Although I have gone to using thick saddles to avoid adding "shelves".
So I guess my neck angle is 1 - 1.5 degrees. But so what because my fretboards are also differing in thickness too. Which changes things.