Feats

New
Shield Proficiency - ''Pathfinder Shields are allowed in Starfinder with DM Approval and the Shield Proficiency Feat, with the exception of tower shield. (See Shield, Portable Cover)''

(Achievement Feat) Zero-Cell Champion - Gain a permanent +3 to all piloting checks. In addition, you may reroll any piloting check once per session, but you must take the second result even if it's worse.

Revised
Jet Dash 
 * Benefit: When running, you move six times your land speed. Whenever you jump, double the height and distance you can jump. While running, you don’t gain the flat-footed condition. Jet Dash additionally gives you 5ft base movement speed in zero-g environments, and allows you to make a guarded step in Zero-G. You can also choose to double move, and "run" in Zero-G, allowing you to move a total of 30ft as a full round action while floating.

Fleet (Combat)
 * Benefit: While you are wearing light or no armor, your land speed increases by 10 feet. When you are encumbered, or wearing heavy or power armor, your land speed instead increases by only 5 feet. When you are overburdened, your speed is reduced to 10 feet.