previously the mixer levels were not save-able or mappable, so by universalizing the params the reverb is now state-connected to the pset system.
one underutilized feature is for scripts to load the last used pset.
param.load()
with no args this will grab the last-written-or-read param for the script. which i think should solve most musical use requirements.
if a script uses psets, this line should be in init somewhere.