Vector2 is missing useful members in comparison with Vector3

Since implementation of 2D support in Unity, Vector2 class has not received significant member synchronization with Vector3:
-Vector2 can now be used in 2D physics to determine movement direction, however it is missing Vector2.down and Vector3.left static variables. This is counter-intuitive for new users as well as users which are used to Vector3.down and Vector3.left.
-Vector2 could also contain a variants of Vector3.Reflect, Vector3.RotateTowards and others, which should be determined.