Just because Star Wars has a massive universe, it doesn't mean you should start releasing one SW every single year, it's just overexposure of the brand, it will make the Episodic entries look less like the events they were before.
Yeah, "universe of multi-media", branching comics, novels and video games alongside the movies is a different thing than making lots of movies set in the unvierse, the other products are largely targeted at the SW fandom, who will always be there for the franchise, the general public however can get bored more quickly.
If you have a multi-media franchise, you can have various ways of telling stories alongside the main movie releases without realy having to make spin-offs. As i said, i'm not against spin-offs, i'm just against overexposing the brand this much in cinema, i think they shouldn't be this exagerated, it feels too much like milking.
Call it whatever you want, you can say how Kathleen Kennedy cares for this, or how the Directors are young minds, but it doesn't change the fact that they're milking SW even more than before, taking as much from it as they can in order to make more and more movies. The last taste we were given were 3 Prequels that were generaly disliked, now, before even releasing the new Episode film, they're already announcing that we're getting 3 new spin-offs alongside the new trilogy.
I think sometimes less is more, and now with these connected universe botht he studios and fans are getting way too greedy with the quantity of material that is released.