Additional speed for those excruciating long chase wouldn't render Alphard Trouser ability Rapidity useless for that will increase the Sniper's movement speed by 10. Better than nothing, can be used to chase those pesky Scouts. Wind on Battlefield activated by the partial transformation Alphard Chest will increase a Snipers HP resiliency that can greatly lengthen one's life in the battlefield, having a low HP rate being a long range class. Usage of a partial transformation really depends on how a player will use the Sniper's effectiveness in the battlefield.
Rusty metallic cyborg with an arm that doesn't match the other one will explain the outside appearance of the Sniper's Full Transformation, Mira. Don't let the slim outer skin fool you, for the Mira full transformation packs skills that can determine the outcome of the battle whether get you first or you got them the first time they enter your range of fire. Transformation skills such as the Double Shot and Intensive Fire will be your main artillery but the invisibility skill Annihilate combined with its branch skill Suprise Shot is where the Mira shines among other full transformation out there. Just think about the 31 meters range of fire that the Mira can do, you can shoot at least 2 skills before the enemy can do anything about it.
Plus, Mira's passive skill, Mira Skin, that increases your overall resistance against elemental attacks and increases your HP and MP regeneration makes Mira a formidable ally and threatening enemy at the same time. Just remember, one's usage of the transformation can easily determine the result of winning and losing.