So wrong on so many levels  

Point 1: Temp Pilot is 1 year and the position is theirs if the pilot is on LOA. If the pilot on LOA comes back and wants that previois base, they can have it so long as it is still "open." Pilot on LOA has job protections and nothing Has changed. The language was only changed from 1 to 3 years to remain consistent with other areas in the contract. Sorry you are having a hard time grasping this fact and reality.

Ponot 2: Pool Pilots were not created with the intent of covering LOA. It is a product of their existence but  not the reasoning for it. You obviously have no clue of the history of this position. 

Point 3: No one should be able to sit around and be out on a medical with little to no oversight on theor actual intentions and work to get it back for 3 years! Why should that base, which could be highly desirable, have to hold the position so you can figure yojr life out. It's a business and other pilots are patiently waiting for a decision from the FAA on your life. Stop being so entitled! You get your job protected and your base protections as long as it is open.

Obviously you must be dealing with this issue to post on JH endlessly. Why not post to the official forum or reach out to a union rep...they will have more than just other anonymous opinions and feedback.