nothing official about bleach coming back at all....
You can start a thread in our battle forum, El Campo de Batalla de las Almas, it's a more suitable place for discussing such topics.
Let me rephrase that, is not a lack of character as if he were "too weak to go for a killing", I think is not in Ichigo to just go and kill someone, you could say he is kinda like Goku in DB, Naruto or almost every shonen MC, they are not bad guys the can kick the enemy's rear but it is not in them to just "finish off" the enemy. After the battle with Aizen Ichigo give the battle some thought. That I believed defined him a little bit as a character, Ichigo is not a bad guy and he is not driven by a strong killing intent. To be honest I would expect Ichigo to behead Yhwach just because of the fact that he was involved in Masaki's death, but will he actually do that?, is not in him I believe. Now Ishida... that's another story
Well, as far as juhabach goes there is a possibility that he is influencing ichigo somehow due to being a quincy. Juhabach opened that possibility when he met ichigo. barring that, I think I have given enough examples of ichigo indeed being more than willing and able to kill people without a shred of hesitation should the situation call to it. Ichigo's early enemies did not survive because ichigo carefully avoided their vitals, they survived because of their own resilience as far as we know. Ikkaku and renji were almost cut in half, byakuya sort of gave up, grimmjow was cut opened Ichigo attempted to behead aizen and straight up killed ginjo. If ichigo is willing to attempt to kill aizen in such a manner and straight up killed ginjo, a human, then why would he, barring any unknowns, hesitate to kill juhabach? Ichigo is not evil but he also clearly does not give a crap, he will kill his enemies.
Mmmm well I do see it a little different when it comes to those battles but is just a matter of how we see it (like the xcution gang, not only Ginjo) as I said, is not like Ichigo can't kill someone, but (imo of course) is not his way of doing things. Indeed Yhwach and Ichigo are not even close to be done, there has to be more to it and the fact that Yhwach tried to put Ichigo on his side must mean that there is either a story to be told or he was simply to powerful to not be considered as a potential ally.
How is this a matter of how we see it? Ichigo is definitely not someone who enjoys killing but he has never hesitated to actually try (which in hindsight is actually very disturbing). Ichigo as a matter of fact tried to kill everyone he fought against during the SS arc. There was never any indication that he was holding back or used strikes which were not deathblows. Ichigo as a matter of fact tried to kill aizen. As far as execution goes ichigo only fought tsukishima and ginjo IIRC and as far as we saw he attempted to kill tsukishima as instantly as possible and succeeded in killing ginjo. This isn't a subjective matter, ichigo has actively tried his very best to end the lives of his enemies and in a couple cases succeeded.
Well we are going way off-topic but to finish. I will have to re-read/watch the whole thing because obviously I'm getting a different impression of the events involving Ichigo (I kinda see him as being "soft-hearted")