Care to expand upon this?
I believe...
...that a good legs, just like any other muscle, should be developed by the ol' "bulk and cut" system, but with a few tweaks. I think, obviously, the bulk should come first, and should be carried out roughly like this:
Part 1, strength development:
(sample routine)
Squats, 3 x 5
Leg Press, 2 x 5
Calf work, as needed, but with a focus on "mass" rather than strength
with max effort (all 5 sets very close to failure), and about 4-5 days rest between workouts.
Part 2, mass
Squats, 3 x 12
Leg Press, 3 x 12
Leg curls, 3 x 12
Leg extensions, 3 x 12
Calf work, as needed
And I believe that one should switch back and forth, between 1 & 2, as needed. The rationale is that one needs strength to build super mass, and one needs mass to build super strength. All in all, it's pretty similar to Wieder's periodization. However, if mass is the primary goal, then obviously, more time should be spend on part 2. Note: calories are kept high throughout.
Now for the cut.
Ideally, to maintain (or even build) muscle during a cut, you need to have BOTH volume and intensity. However, on a calorie restriction, it's nearly impossible to do both without steroids or killing yourself. So, again, the cut is a two part process.
Part 1, strength maintenance
Identical to Part 1 of the bulk, but possibly requiring more rest (like 5-7 days)
Part 2, "finishing touches"
The exercises you do, will depend on the results of your bulk, but I believe they should be mostly "isolation" exercises. If, for example, your bulk left you with a huge ass and medium legs (which is more or less the boat I'm in), you should focus exclusively on thigh isolation exercises (for example, leg extensions and leg curls). And I also believe these exercises should be done in very high volume. Also, since the whole point of a cut is to end up looking good, I think one should spend more time on Part 2, only doing Part 1 as necessary.
Thus, last night's leg workout went like this:
Leg extensions 10x15
Leg curls 10x15.
Note: I wouldn't use reps that high with upper body.
For some reason, I've always had big calves (18 inches). Ideally, you want your calves to be the same size as your biceps (mine are 17), so I don't do any direct calf work.