First of all, hello and welcome back!
🙂 I'm a relative newbie though I'm starting to feel like an old timer now.
As your question, in a word: No. I find the Angel/Darla relationship incredibly fascinating and complex but I don't think it should have lasted, for a number of reasons:
- Darla's sacrifice was a perfect way to end her story. As a vampire she was also shown to be self-serving. IMO her relationship with Angelus was about obsession, power and dark passion rather than an actual love - not even then kind of demon love that Spike and Dru had. She often leaves Angelus behind when they're both in danger, but then enjoys the power games they play when he survives and finds her again. We also see when she becomes human again that she fears death. She hates the idea of her own mortality and part of her arc in S2 is about coming to terms with that. It's what makes it so devastating when Dru turns her again because it happens right at the moment when she has accepted her own death. Her sacrifice in S3 then resolves those two things together - not only does she feel an honest, unselfish love for the first time in her life but she finally comes to accept death. I don't think seeing her alive and as part of the AI team in S5 would have been as powerful as that.
- I've always seen their relationship as standing apart from the traditional romantic 'ships' in fandom because it's all about their history. It's about how they have influenced and shaped each other rather than about whether or not they will end up together. It's also that complicated shared history which leads me to believe any future romantic relationship wouldn't have worked. To quote myself from another thread - their deep connection is precisely what makes them wrong for each other because it goes too far back and too deep. They are reflections of each other in the rawest sense so I don't think it's possible for them to not look at each other and see their whole rotten history together and that's just not healthy. To move forward they each need someone who knows/sees them differently.
Well those feelings wouldn't have stayed - they couldn't because the only reason she was feeling them was because she was sharing Connor's soul. Once he was born, she wouldn't have had the ability to care anymore. She'd have been more likely to kill him or try to use him to punish Angel for rejecting her.
Again I disagree. I've argued
elsewhere that I do believe Angel came to love Darla in her final moments but I don't believe he ever truly loved her before that. When he was soulless he was obsessed with her but wasn't capable of love. In S2 although he cared about her, his desperation to save her was partly about what she represented - his damnation, and therefore what saving her might represent - the worthiness of his redemption. In S3 I wouldn't say he got peace from being with her; rather he was finally
at peace regarding his relationship/connection to her. However that is down to the events of Reprise/Epiphany which resolved those feelings for him. He no longer obsessed over Darla because he was no longer obsessed with saving himself via her, so by the time of S3 he is much more mentally and emotionally stable and is able to offer her a purer compassion and empathy on a much more personal level.
I do think we should have seen a resolution to the Angel/Dru relationship in S2. That would have fit the season much better than the insanity of Pylea (even though I love Pylea)