I am happy that Spalletti is gone. But he deserves far more respect for what he did.
Spalletti isn't a limited coach by any means. He has shown that plenty in his career, like the no striker formation at Roma last decade, or even the free flowing football they played 2-4 seasons back while reaching 2nd place.
Spalletti just didn't have enough of a stature to make big demands on the players front. Couple that with our FFP agreement and our hands were severely tied. You can blame Spalletti for making some bad choices like Valero, or Keita, but then he did the best later with the players he had.
There are coaches that have some style of playing, but also adapt their tactics based on the players they have. Spalletti, Ancelotti and many others belong to this category. There is the other category where the coach has a certain style, and they will sign players, and get existing players to adapt to their style. Conte, Guardiola and others are fixated on their style. One may not necessarily be better than the other.
Conte already has much better players than Spalletti had, and ones suited to his style. That's great for us now that we have gone down this road. With a couple of more signings, being in top 3 comfortably is the least that we should expect from this season.