The thing about any design rules is that they can be broken. To me, the question is how often in one routing? I can see a blind hole, maybe two per course. After that, someone will say its goofy, even if I don't happen to think so. Ditto for forced carries, long walks between tees, back to back holes, etc.
I have done second holes as par 3's, and at Brookstone in Atlanta, did no. 2 and 4 as par 3's. I had originally had 8 as the other, but when the land plan changed and it meant squeezing it next to the poop plant, I squeezed one in and shortened hole 5 to accomodate. 2 always had to be a par 3 because of housing considerations and topo.
Its hard to write about routing as TD and Forrest say because most of the things you write are pretty good rules, but you can always find an exception. For that matter, its hard to describe the process because its mostly plan a little on paper, walk the routing(s) you have prepared, change the routings (hopefully narrowing from say 5 to 3), walk the ground, change the routings, etc. As with everything, skill and experience make a few things jump out at you, but hard work makes the exceptions jump out at you.