I don't usually pay attention to voice actors when choosing games but I enjoy the game more when I find out that my favorite voice actors are voicing the characters I liked.
It depends on the game. For example Olympia soiree took me +80 hours to finish. I usually play in my rest times on weekends. You could also play shorter games if you don't have enough time for a long otome.
Omg prince of tennis otome was definitely my favorite!
I jumped in happiness when I found out about it. So I think it's great to have otome games based on anime.