you can buy a freeze dryer , between 2 & $4000 i think , ( i think potato chips are freeze dried ) , work slightly diff to ya standard home freezer but basically , above zero degrees the lower the temp the higher the humidity but as you move below zero into minus degrees the humidity go's the opposite direction & decreases drying out the air & removing moisture from flowers , the benefits i hear are as you say fox flower size does not shrink as much as standard drying methods , preservation of terpenes is another benefit as some monoterpenes are volatile at quite low temperatures when doing standard bud drying
maybe you did but would have been nice if you had done both drying methods , freeze & standard to compare apples with apples , you would need to have at least some control over the standard drying method though , as to try & keep monoterpens intact as much as poss , so your apples are both pink ladies & not a PL vs a granny smith , would def like to try it one day