As someone who played otome games for such a long time now, I guess my tastes has gotten wider. Though, I think it has more to do with how storytelling and player demands have changed throughout the times rather than me having wider tastes than before.
I'm not sure if it's just my memory failing me or just biased thinking, but otome games back in the day, especially JP ones, were very formulaic in nature(LIs always have stereotypes and such, which is why they have one-liners in character introductions on what type they are). So when I was a young teenager, it was the era where ore-sama and yandere characters seemed to be really popular. If an LI was actually 'caring' back then, a lot of the times they're secretly possessive/yandere or have some sort of dark side to them, which was honestly uncomfortable for me. So I ended up going for the mysterious guy or the smart one because, well, they felt the 'safest'.
Nowadays, I think there's a lot more games with caring, green-flag LIs without any secret red flags, which I really like. And even if say there's an ore-sama character or some kind of type I don't lean towards to, I find that they've mellowed out and games have significantly better storytelling to show why those LIs became that way. So my tastes have 'widened', but it has more to do with how a lot of games have slowly evolved to cater to a broader community.