I only played the dark version of the game but here is what I think was going to happen if the story continued.
Sarah already pregnant and eventually joining her getting pregnant would be Amanda, Christine, Jennifer, Angela, Hailey and Stephanie. Not sure about Erica, Marie, Marie's Daughter and James's sister. If the story would have kept going it wouldn't have surprised me if every female that Steve fucked would end up pregnant.
I think Steve buys a bigger house (maybe Rock's) for him, Sandra, Amanda, Christine, Jennifer, Sarah, Angela, His brother, Hailey, Stephanie and all their babies to live in.
It's anyone's guess as to how many more women Steve would meet and fuck with more potential pregnancies.
If he invested in Erica's project then there is every chance he would meet new women and soon be fucking them too.
I was getting the feeling that there could be some action between Steve and James if you chose that route.
Christine seemed curious about Tracy so there could be some action there, maybe Sarah too as she seems up for anything. Maybe Tracy would move into the Mansion too.
Not really sure how the whole Rock storyline was going to go. If you were on the path of Steve getting involved with Tracey then maybe Steve gets some action with Rock and his husband.
I don't think Rock is someone who should be trusted so he might try to blackmail Steve or be after his business or all of his money etc.
Stephanie was starting to spend time away at Rock's project so he might be trying to corrupt her and use her against Steve in the future.
Steve did appear to be living the dream with endless women to fuck everyday but he was neglecting his business and may well send himself broke financing all these women and their babies.
I was really getting into this game and the characters that were in it. I don't know the actual circumstances (yes I know it could be due to personal maters) as to why it's abandoned but I think sometimes dev's underestimate (generally speaking) how much players of these games get out of them. They can be a bit addictive when you find a good one. You want to see what happens with certain characters and storylines and then it all comes to a halt.
It was fun while it lasted. Really enjoyed it!