It's a product of its times, in all honesty I appreciated it for being tastefully goth. Despite the goth monsters, color palette, music, etc, the regular people just dress like normal people. But the goth elements do give it individuality
We have to keep in mind with DBS, is that they literally have a stated plot point that fighters can grow massively powerful just from fighting. No training, no transformations, fighters grow far stronger while they fight now.
I think Goku's given up on the SSJB stuff and is now focusing on Ultra Instinct. Vegeta? Who the fuck knows, but he's probably going to be focusing on Ultra Ego here on out. SSJB seems to be done and dusted as a concept, relegated to the weaker form status.