All good ideas. I think you may have the basis of your own game in there somewhere.
Just to be clear: I have already begun writing the game, and you can play as a male or a female...
The background is set, the character:
- has money, but isn't "wealthy" by a stretch
- has no children or siblings
- is not a secret agent, super scientist, special ops, etc etc
- has a solid degree and career history in tech
- is not trying to build a harem, just trying to pick up the pieces and build a life again
There are, currently in writing,
waaaay too many romancable characters (ranging in ages from 23 to 40), and 26 planned endings (not all good, a few are just meh, a couple are bad.) There's the simple "find a waifu/husbandu" story, and it can be played as that. Deeper there is a plot of corporate espionage that the player may, or may not, want to uncover. (To get the whole story would require 4 playthroughs, one in each of the jobs you can pick from in the beginning.) If you really want, you can be a playboy/playgirl... sleep around and end up with no life partner. Or you could end up in a relationship that's casual. Or, you could go full monty and end up in a marriage. Your choices, (and the partner you choose - not everyone wants a forever someone) determines what kind of relationship you end up in.
It's not a grand story, but it is (or I think it is, at least) an engaging and human story.