Okay I understand that this is a remastered class but unless all the other classes get more spell slots this is way OP.
1) you have the advantages of both a prepared caster and a spontaneous cast with tho controlled a larger selection of spontaneous spells pre rank than any other spontaneous caster. With the addition benefit of changing them every day and they are all signature spells coming from multiple spell tradition list.
2) on top of this incredible level of versatility they get more spells pre rank than any other class. 6 cantrips and 4 for every rank until 9 than 3 for 9th. And this all without feat cost. On top of this you get versatility in your focus spells and start with 2 focus points. Now you can say that the Apparitions spells are limited but look at the list they are primarily Primal or Arcane spells.
3) on top of all this versatility you can also take feats to add to your Apparitions repertoire which means these spells are also signature spells.
4) to top this off they get legendary spell casting at 19th level making them as good as any other caster.
So to summarize at first level I can prepare any two divine cantrips plus say Tangle Vine and ignition. Plus I can prepare any 1 divine spell plus I can cast either Wall of shrubs or Imposing Earth as I need.
At fourth level I can prepare any 2 divine cantrips plus Tangle Vine, Ignition, and Gouging Claw. 2 rank one and 2 rank two divine spells that I prepared ahead of time and I have a rank 1 and a rank 2 slot that I can use to cast any of the following (Wall of Shrubs, Imposing Earth, runic body, genial Breeze, Entangling Flora, Exploding Earth, Heal, Harm) all of them Signature spells.
This only get more extreme. And I’m not even getting into the fact that this class has a bunch of melee boosts and Wild shape