Generally I like variations. I don’t stress about there being too many of them, and I don’t beat myself up trying to get all of them. As a set builder I go for the main version first.
Most of the time the variation is in the border colour, or some special theme (bubble gum, playoff beards, different jerseys etc).
Here are the variations on the 2014-15 OPC Platinum Matt Duchene.
So the versions are upper body looking left and bit more upper body looking left.
Why bother as a variation??