Rewatched G. Black saga... it's been pretty boring. I think it was the nostalgia factor of a new story with Trunks that propped it up on first watch.
The Good:
-The scenes giving more background on the extended lore on universes and kais are cool
-Goku Black is cool, SSJ Rose is cool
-Future Trunks returning, in concept, is sweet. Scenes with Vege, Kid Trunks were good
-The destroyed future setting is cool
-The voice actors performance, SSJ Rose in particular
-The ending scene with Giygas Zamasu
Essentially: The outline of the story is great
The Bad:
-Zamasu's motivations are barely fleshed out, and kind of stupid tbh
-Arc is short but drawn out. Multiple trips back and forth between the same 3 settings over 30 episodes
-The dizzying time travel shenanigans
-SSJ Blue Vegito's execution. Pretty much pointless in the grand scheme of things.
-Lot of unexplained, unsatisfying stuff. SSJ Rage, Spirit bomb sword, etc (Remember the weeks of build up to SSJ R?)
-Zen-oh button with the universe erase, then Whis sending Trunks back. Ending in general was just stupid, fast, unsatisfying, ruined the whole story of the arc IMO.
Essentially: The execution of the concept was bad. Some parts were too much, some not enough, making it so overall it was fairly mediocre.
I'm still glad for it, but watching it as the episodes came out was way better. Watching it back to back made the flaws really noticeable.