I'm truly disappointed with more Stormcasts even though I own an army of them myself. Don't really like the situation where there is priviliged army which will get 3x more models than the others. I mean it's ridiculous - it's a strategy game at it's core. It's supposed to be well balanced and it won't be when one army has much more building options than the other. If they want to give individual models instead of introducing new army there are certainly armies that need them more than Stormcasts - Fyreslayers mostly, followed by Ironjawz.
That's the biggest thing that pushes me from 40k miniatures - the space marines all over the place. Grey Knights, Ultramarines, Deathwatch, Blood Angels - for me that's a one faction and it doesn't deserve to be put in every single box. I might have even bought one of those boxes - Death Masque for Eldar or Overkill for Genesteallers but why the other faction is always Space Marines which I truly dislike? I played a lot of board and card games set in 40k but they were nowhere as rewarded as in 40k miniatures.