Don't chuck your Gyrator. The Nug is pretty rad on powder days but has it's limits. I got one last season and had the same notes as you on the reduced stability (esp. comparing to a Riders Choice). In addition, the board struggles with wet heavy cascade cement. You will want your other board for Spring dumps and anything super deep. Super fun on slushy bluebird days though.
Nug is an awesome change of pace.