I think the important thing to note here is that asexuality does not dictate romantic attraction or orientation. As an ace, I appreciate the effort of many CoG writers on here to include asexuality or aromanticism but there is a difference between the two and we should never (I mean go ahead if you want lol) use asexuality as an umbrella term to include aromanticism. Those are two completely different spectrums.
Personally, when I play CoG games, I usually play as a pan/bi/hetero character so I can still pursue romantic relationships. I may be an anomaly in the ace community, but I personally enjoy sexual satisfaction and fantasies, and when I read or play these types of games, it’s about the only time that I feel normal in my attractions or lack thereof because it’s not something that I see? Like attraction to me is based on physical/sexual attraction, so when I read a budding romance, the fact that it’s reading and not living it in person, I don’t necessarily notice that “Hey, I’m not attracted to this character.” because I can’t see them. I still enjoy romantic relationships and the idea of romantic and sexual relationships, so reading about it, it’s not much of a displeasure. I don’t know if any of this makes sense, it’s kind of hard to explain lol.
As a general overall advice, I would just say that if you want to include asexuality, have an option to abstain from sex without it affecting the future of the relationship and so that they can still reach the same percentage in the relationship through other means. (“Let’s not have sex.” “Oh booo.” -5 relationship with Het) or (“Let’s not have sex.” “Okay.” with no negative or positive impacts but a loss of the opportunity for a relationship gain)
Let me know if you need me to clarify on any of this, please let me know. I’m not that great at explaining this.