I think you guys are overreacting, remember that at the end of the day, Lallo was successful only thanks to the basic merchandise. He got lucky with the release of best sellers in every category: Marmont bags, Princeton loafers, Dyonisus bags mostly. If Demna manages to release a best seller sneaker / loafer and a bag they will be doing fine at damage control in the short period. He just needs to release the Gucci versions of the triple S / 3XL and the Rodeo and they are fine at least temporarily.
Funnily enough, Demna managed in 2 years released more iconic and best seller bags (Rodeo, Bel Air, City) than Vaccarello in a decade at YSL...