I feel like this has been posted before in a different thread, but I was looking up the trailers they released since Versus XIII was first announced just to kind of remember all of the original things we saw for the game. It's interesting to watch and see how the concepts looked back then compared to now.
Also, here's a translation of the party scene with Noctis and Stella. I'd never seen it translated before I just realized, so it was interesting to go look and see the Etro mythology stuff being present there and getting kind of a look into how their powers might work.
I can see why people would be upset by Stella's departure moreso now than just based on my faulty memory of the older trailers. Her character seems a bit intimidating and badass. I never saw her and still don't see looking back the possibility of her in your party as they seem to be more adversarial roles. Them having been acquaintances turned into enemies mixed with the mythology built in their conversation in the last trailer actually seems like an interesting dynamic. I'm really curious how the role is changing with Luna. Hopefully we get more info on that soon (ie, hopefully the game comes out soonish).
Really the concept still looks super interesting to me now looking at those old trailers and what the gameplay looked like back then. I'm not convinced much work was done on them back then still, but I feel more comfortable with the more Kingdom Hearts looking menu compared to what I played in the demo. I'm not too bothered by the inability to switch characters, but I do see cool possibilities that could be present with that ability, especially with setting up traps or ambushes maybe like what was seen in the demo with the Behemoth. The concept for the battles, world, characters, etc all look interesting, and I think a lot of that will still be present, but what we actually got to play in the demo certainly has a different feel and tone compared to all of the stuff we saw in the old trailers.