i was reading your OP like "well yeah that's kind of lame" until I reached this part.
just, bruh. talk about overkill. jesus christ. someone reign this man in
Part of the issue with the Trunks arc is that Toyotaro stuck closer to Toriyama's outline there, and in that case it was inherently more unsatisfying than the route Toei took. Trunks having little role after returning, and merged Zamasu being unimpressive were all from Toriyama himself (in Toriyama's outline Goku and Vegeta teaming up would be enough to overpower merged Zamasu - and there wasn't even mastered SSB or anything like that, which Toyotato added to make the battle seem on a higher level without changing the basic story flow. Healer Trunks also was a Toyotaro concept to give him a bigger role without changing that story flow).
I still prefer how Merged Zamasu had a much longer and proper final battle in the manga though, compared to just two episodes in the anime. The introduction of Mastered SSB and Goku being barely able to hold the form held the drama well enough for the final battle, even if it was "just" SSB.
Toyotaro's ToP was a mess though, yes. The chapters before the tournament were good, hyping Toppo more than the anime version, gave a lot more hype to Quitella and introduced a much better version of Jiren, and even more build up to UI, but once the tournament started it was just a wave of bad decisions, like wasting a 40 pages chapter knocking out Tenshinhan and Kuririn without allowing them to do anything, just to set up Freeza beating Frost, someone who was never relevant in the first place.
Jiren's character in general is the one thing the manga version of the ToP arc did well. He had a character flaw (wanting to be an absolute force for justice that could fight by himself, without allies, due to erroneously believing it was his master's last wish, when it was actually the opposite - he should learn the value of working alongside others), but wasn't portrayed in an outright villainous way unlike his anime counterpart.
A manga where Vegeta lost to Hit because "Super Saiyan Blue Drains 90% of your stamina upon activation" and the next arc had Vegeta switching between god and blue like it was nothing.
I think this was a big writing failure on Toyotaro's part, but more about how he completely failed to present the drama of the situation to the readers. SSB in the manga originally had a very high activation cost before settling on a low power. This was why Vegeta lost, yes. But it's not like he'd have a big advantage if he just turned into SSB usually either. That power still would vanish in an instant. It's why Goku waited to use SSB as much as he could and then used all his power into a single Kamehameha (which Hit still dodged) - he wanted to get Hit with a full powered attack. And, yet, the way the chapter was written, especially thanks to the post-battle banter, most readers seem to completely fail to get what was supposed to be the whole urgency behind the situation.
Then in the Trunks arc, eliminating the energy consumption of SSB becomes a plot point, with Vegeta managing to change between SSG and SSB in split seconds with no energy drain and Goku obtaining the mastered SSB form that gave him that power permanently, but damaged his body.
A manga where Master freaking Roshi dodged punches faster than time.
You're mixing the anime with the manga there. In the manga, you just need power higher than Hit's to cancel his powers. The anime is the one that never made that very clear, making it look like the people who break his techniques are moving faster than time.
