Aesthetically, i think they're a downgrade from trophies. But logically it's actually a pretty smart decision to make them like this.
They fulfill the role of a collectible and a video game museum that trophies used to fill, but without having to hog development time like before, specially since there's bound to be at least a thousand spirits. It also doesn't limit them to make profiles only for recent games on Nintendo consoles where they had access to the models they wanted to use.
Once again, aesthetically, these are kind of a downgrade from event matches, i've never been a fan of all these stat buffs/debuffs clogging the UI and it seems unintuitive at a first glance. However these could actually be more fun event matches, essentially being themed fights.
We got an example of this where we saw a fight for the Imprisoned spirit, represented by a giant K. Rool, being defended by Ghirahim's assist trophy. Capitalizing on the new mechanic of being able to KO assist trophies is a great idea since it expands the possibilities for these fights and makes Assist Trophies, Pokémon and other items feel like a more worthwhile inclusion.
I'm really glad to have some sort of story mode back, but from what i've seen so far, i have some worries.
* Potential cons:
-Non linearity could potentially mean much less cutscenes of characters interacting, taking away one of the most charming elements from the Subspace Emissary.
-From the footage so far it seems like the mode could end up only having battles against characters and bosses, with no plattforming sections, regular enemies, minigames and such. This could make the mode feel stale after a while.
-Having skill trees, character progression and buffs/debuffs could disencourage using a wide variety of characters and, frankly, just feels like unneccesary stuff for a game like this
*Potential Pros:
-Unlike Subsapce, this mode could prove to be a faster and more fun method to unlock the roster.
-The overworld map they're using seems to actually be themed after Nintendo franchises this time around.
- BOSS RUSSSHHHHHH