It is not possible to determine the reclaim value of a unit. Take Loki as an example, it adjusts the reclaim value by script and there's no way to know that this map (or any other map / mod) did that, at any point in time. Mechanics like overkill have impact on the reclaim value too. It would, at best, confuse players and at worst the system would lie to players.
The real issue is that people consider Loki being 'ancient' to be a good argument to keep it in the pool, while the map is confusing to every (new) player that are just applying what other maps taught them.