So we’re making the First Age longer?
No, the First Age is not going to be longer in our story. As far as I know, the dates when Aredhel leaves and returns to Gondolin will be unaltered. And that's a question for Season 5 anyway.
All that is happening is that the elves are moving to Gondolin in a different year than Tolkien said they did, but we likely aren't commenting on what year it is on screen. It just means that if we want to refer back to the founding of Gondolin later, we'll have to be careful not to mess up our timelines.
'Some time later' or '200 years later' is not the way to show time advancing, at least not in a story we want people to take seriously. That's more appropriate storytelling for a joke.
Hetalia: Axis Powers Ep 1 introduces the Roman Empire, and is basically like...and then World War I happened.
(For those who aren't familiar, this show personifies a bunch of countries and makes fun of them in stereotypical ways, but manages to cover [some] real history.)
Yes, we had some suggestions for Bard's wife's name, but we hadn't chosen one yet. We should do that next session.
Naming Annael's wife and son would be helpful, but we won't be casting them this season (or possibly at all). For now, they are too minor to go on the casting list.
Likewise, if Maglor's wife is in Valinor, we don't need to name or cast her. If Caranthir's wife is present in Middle-earth, we should give her a name, at least. Casting would have to wait until she is introduced into the story with a role.