These, of course, are the old measures or criteria for parts/clips which have fueled many of our debates:
Groundbreaking/NBD
Perceived velocity
Overall trick variation
Switch to natural stance ratio
Stair count/estimated gap size
One stair more than last part (repeated trick since last video part with the addition of one stair)
Handrail size (length=stair count)/estimated height when contact initiated
Estimated pop size
trick caught or plopped
Naturally occurring structure, purpose built (skater-made) obstacle or modified approach (bondo/angle iron)
Sketch/style meter (faked?)
Clothing trendiness/gaudiness/freshness (makeover?)
Geographic proximity of spot to skater's native origin
Perceived casualness of execution
Point of part that viewer's mind could not process any further
Additional non-skating clips (superfluous or aesthetically enriching)
Thus, I welcome your more quantifiable metrics since many of these old measures are purely subjective.