I'd love to play a 5e game where the players had the chance to create some tailored content; maybe a nation, an arch-enemy organization, or just facet if culture, like the name of the days of the week.

I want to start at 1st level, and use the core rules only, since my face to face group had given up on D&D for the foreseeable future and I've not had the chance to build certain classes to fruition.

Home-rules would be highly refrained. If there are more than a couple, that aren't printed suggestions, please don't advertise here.

Having a link between the PCs would be cool, but not something we need to force relationship from childhood or anything.

Finally, I'd like to play a duo, this is optional but preferable. If everyone is put off by me having two characters, or each want two, and there's four players, I think that's too much. If, however, one other player wanted a second character, I think that might work. My perception is skewed though, as I've played duos in face to face game, for years, but rarely online, and never with 5e.