I like this type of routing as an ideal.
Something ideal for me would be the following:
3 short par 3's (105-120)
2 long par 3's (185-230)
5 long par 4's (440-480 depending on slope)
3 short par 4's (280-320)
2 short par 5's (485-510)
2 long par 5's (570-600)
1 mid par 4 (340-380)
This gets us to par 71 and somewhere around 6,300
9 long approach shots (5 long par 4's, both second shots on the short 5's and the 2 long par 3's)
8 short approach shots net of driving the short par 4's (3 short par 3's, 3 short par 4's and 2 3rd shots on long par 5's)
1 mid to short approach shot on the mid par 4
Basically a course that rewards scoring club play and long-iron/hybrid/fairway wood play. Limits total yardage and required acreage while keeping the walk on the shorter side. Some of the least interesting routings IMO are shorter older courses with a load of par 4's in the 340-400 range.