Had to get something up against Peach, I feel alot that it´s a key matchup to win in in order to gain higher placings in tournaments and it really is time to step up and beat that earilier "close to free win character", desynch seem to actually fit really well since peach is kinda slow and have to space her fair or stick to her projectile to put pressure on ICs without getting grabbed.
Why I think they actually suit better then any other character to in a way play more offensive is mainly desynch, and by that I mean Nana charging fsmash as a kind of approach/pressure (in a similar way Marth´s uses his dtilt like I´ve mentioned earilier).
That combined with waveshield or just spacing the opponents moves as Popo while the opponent gets pressured, it´s still safe used correcly and can hit the opponent.
Possibly even possible to react and dashgrab them in their hitstun from the fsmash and then do massive damage in alot of ways.
It's just very different for every matchup if desynch is easy to mantain or not, and keeping Nana on the stage.
But I agree that some defensive game is needed, or like I often say at tournaments, theres no offensive game that don´t come from defensive positions, so "offensive play" kinda is just an illusion, or can anyone prove that to be wrong? (would really like to know if theres even a game/sport that benefits offensive play, I guess technical play is a way of calling it offensive since there can be risk in execution, and good reward if maintaining it well)
Actually Armada once proved that to be wrong, it´s in the first teamsset against Mango and Lucky from Apex, sacrificing himself to get one on one situation(taking lucky with him) against Mango, it got them the win too.