I think Spike seeing Buffy's acceptance of Angel and her open relationship with him did play a massive part in him thinking to go and seek his soul. Being told constantly that he was soulless etc clearly flagged it as the 'lack' that he should fix in his quest and directed him for sure. I also think Angel's connection to Spike probably played a part in Buffy not staking him when he was first chipped and when he returned in Lovers Walk too though, so it is difficult to extricate such a huge factor from their story and reimagine so much.
The soul was something the group could readily accept fundamentally changes a vamp from all those that Buffy is fighting every night and saving people from. The chip would have just been seen as a muzzle regardless of the soul issue I think. For canon compliancy on the soul's importance I'd have to say that yes, no matter if they had experience with Angel's soul before or not, eventually the inequality on moral boundaries and emotional depth would have mattered somehow. If Spike was just chipped and they hadn't had the Angel experience I think they'd still rightly have been wary. Possibly, if they were less prepared and knowledgeable about the limitations the soul presents, awakening could have just come with more disastrous consequences like Jenny's murder.
The soul was something the group could readily accept fundamentally changes a vamp from all those that Buffy is fighting every night and saving people from. The chip would have just been seen as a muzzle regardless of the soul issue I think. For canon compliancy on the soul's importance I'd have to say that yes, no matter if they had experience with Angel's soul before or not, eventually the inequality on moral boundaries and emotional depth would have mattered somehow. If Spike was just chipped and they hadn't had the Angel experience I think they'd still rightly have been wary. Possibly, if they were less prepared and knowledgeable about the limitations the soul presents, awakening could have just come with more disastrous consequences like Jenny's murder.
Spuffy freak
Can't argue on that

