You bring up a lot of good and points and its interesting to hear your own personal perspective and History on this I think the main thing I'd like to address is your last point about Moxxie's mother since that's part of why I'm so interested in Moxxie and Crimson's dynamic,
yes its true that besides being abusive Crim also took away a loving parent from Moxxie but at the same time this is Hell where certain standards are pretty different from our own society such as the fact that murder is common place
that's not me saying that this would make Moxxie view it as a lesser wrong or he would suddenly be okay with his dad or ever be if we're being Honest,
But I feel that does mean certain things that may be unthinkable in our own society would such as maintaining a relationship with a murdering family member who killed another loved one are more within the realm of possibility,
for instance If hypothetically the story did take this turn I could see it not being something that sprouts out of nowhere but maybe comes about after either the child or Millie while she's still pregnant gets kidnapped
and desperate for leads and help they end up having to ask Crimson for his resources to help find them and after they're rescued this buys him a bit of goodwill and maybe leads to Mox suggesting they give him a chance to see his Grandchild albeit under strict rules and observation,
while I agree with you that this isn't the type of thing that can be rushed I don't think its entirely out of the realm of being able to be handled in the show's runtime
as it could basically be shown through the most important bits such as them talking it out and deciding to go through with it and if the choice is made prior to Millie giving birth then realistically that's months for her and Moxxie to get their heads around the idea
and maybe we see the first couple of actual visits and exploring Moxxie's conflicting feelings about it such as the fact his father is capable of being kind to a child,
and he can also have some confliction about his mother and Wether he's betraying her by still wanting some sort of relationship with his father as that's really interesting to unpack tbh but I think the interesting thing about this is that it isn't simple
Moxxie wanting a relationship with his dad and letting him be a Granddad isn't necessarily him being a terrible son to his mother or betraying her and Crimson being allowed these things isn't necessarily excusing his past actions or letting him off the hook
its very emotionally complicated and I think that's what makes me so intrigued by these ideas,
( also considering how Moxxie never went back to kill him over the years or even after the Chaz wedding fiasco I Honestly don't think he wants him dead
and it probably wouldn't be much of a stretch if he'd prefer it if he was no longer a force that I.M.P butted heads with every now and then and instead would prefer it if there was a way to have a peaceful and at least civil relationship with him ),
"" And would send the message that this is the way all violent men can be treated, and that's just wrong. ""
I actually very much Disagree with this point tbh as its falling into the old trap of assuming that if a fictional story portrays something that automatically means its endorsing it and presenting it as something that should always happen,
its sort of like saying that because Sera was let off the Hook in Hazbin and that was portrayed as a happy ending that the show is saying that every type of mass murdering leader in History should be subject to the same treatment as they actually are good people deep down who will do the right thing and that its a good thing,
but a story of any sort portraying one situation where Dealing with an abusive family member isn't as simple as either 100 percent no contact or killing them and explores how messy and tricky it can be dosn' t mean the story is making some big endorsement of this approach in real life,
I mean if the story for example had multiple characters where this was the case like literally every single toxic or abuser character like Stella and Blitzo's dad and Mammon all ended up getting reconciled with their victims by the end then that can be considered sending a very poor message,
or even if this type of story tried to portray Crimson as actually some trouble parent who was secretly good deep down and tried his best but just didn't know any better because of his own upbringing
and ended up trying to excuse what he did then I can also see the point that its a bad message but a story simply portraying this type of thing I don't think is really fair to say its sending this type of message,
I know that like you said its not very likely to happen but I just find it interesting is all and its certainly preferable to explore these ideas safely in my head with fictional characters I like rather than actually trying it in real life haha 😅😅😅😅.