What about family ?
We all have family names (fully useless now) but no family at all. We can make so people can have children, why not ? It will of course be an option.
I'm not sure the way to do it it in game or out game (web site, official or fan). Out game is the easiest way, you can combine it with a matrimonial agency, an optionnal genealogic tree...
We can already marry, let's have children !
A lot of players will like the idea. I don't remember to have seen that in any game, but this idea has its place in a RP game, as well as the background of your char., the ability to join guilds, ...
What will it really add to AO ? Fun, but also more depth to characters involved, a reason to do more RP, more interaction between players (specially between new players and veterans), a more coherent and logical world... some powerfull and influent families... some high qualified families, all of the same profession (tradition)... new conflict between families... whatever...
Some questions may arise:
How about our age and race ? Thanks to nanobots we all live forever and stay young forever. So it won't be a problem to see a grandfather looking the same age as his grand children.
What about Atrox and different races ? We can say the reproduction is essentially artificial and that everyone (single or couple) can buy (not with credits in game, it's just the idea) a child (or two or even more), of the chosen race.
You may build the system to be random, as in the real world (in game: childs choosen in a database of players who want to have parents; or the reverse: parents are chosen in a database of...) or more flexible, with decision fully up to players.
I'm not able to do such a database out game, but isn't out there someone interested ? And Funcom, on the official web site ? or in game ?