So, I read the new chapter and despite some uncreative action shots and Jiren having shitty stamina, the chapter was surprisingly not terrible. One traced panel is still better than many moments of reused animation and doesn't waste any time just for the sake of pretty colours, so the fight is better than in the anime. The use of Ultra Instinct Omen is also done better as Goku couldn't just instantly react to Jiren's attacks and could only avoid them doing serious damage until he gradually got more used to the form, which makes the jump into true Ultra Instinct far more of a change than it just being the same as UIO but with beefed up stats. Jiren is also given a decent motivation for his wish as well as some decent irony to go along with his unconscious dependence on another, rather than just being alien Batman who can only talk about "muh strength". Finally, whilst him being weakened down to the level two Base Saiyans can get the better of him, that scene at least served the purpose on being the payoff to Whis' advice that Goku and Vegeta used teamwork and it makes sense how good they are when they try due to having fought many battles together and having fused twice. By comparison, Galu and Freeza suddenly making a good team came out of nowhere.
So yeah, all the important factors of the climax against Jiren are far better in the manga thus far.
for some reason. He also dropped back to base after fighting Kale to conserve stamina, so he definitely can't stay in the form forever even if he's refined it.
, plus 
