Stocking deer from another area into a deer population in an attempt to introduce new genes and improve quality is a controversial and much discussed subject. The genetic contribution of 1 individual buck is limited where it is introduced into a population where other bucks are already present and also breeding does.
There is no research available that indicates that introducing several bucks improves quality unless the pedigrees of the deer (bucks as well as does) stocked are known. Otherwise there is a good chance that undesirable, but not easily recognizable, characteristics are being introduced.