I meant more of a story sense than actual sidekick. I'm sure she'd see it as a partnership of convenience. But I think in general she needed time to develop byond what she was in spawn: eye candy.
I would have thought Sera being transgender was the bigger reason. Honestly I think Bennett just crammed too much political opinion into that comic and that drove it under (see what you did? You made me go there). It wasn't just that Angela was gay, it wasn't just that sera was transgender, it wasn't just that there was a strong anti-patriarchy/pro-feminist message, it wasn't just that the final issue literally classified differing viewpoints as a evil sin that fuels the final villain, it's that Bennett crammed all of it in at once. I really enjoyed the comic, don't get me wrong (still my Avatar after-all), but there were issues where I went "really, we have to go there again? Can't I just see her take over Hel for a bit?"Of course, Angela being gay is undoubtedly a part of why Marvel has so little interest in pushing her. They allowed Bennett to out her as gay because they'd already decided they didn't care about her. If they'd had any real plans for her, they never would've allowed Bennett to make it explicit that Angela and Sera are lovers. Because Marvel remains largely homophobic.
Actually I think the secret wars short they did told in folklore style as told by Sera was brilliant. I could have lived with that for a few years. Sera lightened up the serious Angela tone marvelously.
I agree with all of this. Merely pointing out that they clearly played with her look a bit and quite frankly .. I _loved_ that Queen of Hel look. Very warrior princess, even if they reverted that hela-esque helm back to her original.