It does have seperate talent, but we do need seperate summons
And in ranked (not a big deal, all my frmn have 3rd slot reserved for this, it will be fine, for as long as I'm still using a gold summon in ranked anyway)
And in masuri (this is actually a thing, since I don't always use gold summon, so this actually require changes)
And in survival (I actually use one of my main team there and never lose a char so never need a change, but not everyone is like that)

I think I got them all, am I missing anything?