Oh boy,

You're going to get an earload from the "I hate banquettes" don't- do- it Houzz club, lol!

For me?

We LOVE our L shaped banquette with storage, it's incredibly comfortable, sturdy, attractive, no sloppy chairs sticking out, room for chairs for the elderly when they do visit though, too many great things to comment on.

Can you post your floor plan?

Here's my hubs setting it up.

Can you post a photo of the whole room? I also like banquettes, but I'm trying to imagine what you mean by mirroring two l-shaped banquettes and how that would work with a large crowd. If I'm understanding you correctly, wouldn't that essentially create two separate eating areas?

If the table is that large, I'd be more inclined to just have the banquette along the long wall.

Yours is beautiful! I didn't know there were banquette haters here. lol Thanks for your reply. Here is a photo of the room - since repainted all white and no pictures on the wall. :)

I just found this online - similar to what I'm thinking but more room to walk between the too tables. Too restaurant-ish? But I love it for some reason. But I may split the back seat rather than one long one.

Honestly, function-wise I think you'd be much happier with a banquette bench along the window wall and chairs on the kitchen side.

So keep the sides open? The only issue is this doesn't solve my "need a cozier space" problem. This room feels so huge when the (adult) kids come for dinner and there are only five of us.

Yes. Sadly, you'll never get "cozy" with a table that big anyway. You'll simply have to eat on one side or the other when there are fewer of you, IMO.

You could do something more versatile than the L, or if I’m reading correctly, two Ls. Placing the banquettes opposite each other with a large table in between, fills the space well, but you keep chair clutter to a minimum.

Leaves make a table bigger or smaller, but what are you supposed to do with the extra chairs when the table is small? A two sided banquette defines the space, and allows for a cozier ambiance when it’s just a few people, and generous seating without a ton of chairs, when you have company.

Eam - 2 chairs can flank a picture on either side wall. Or the OA can put them with the other chairs that aren't in the room.

I do like the 2 sided banquet for 8 people but it would have to be really large to accommodate 10-12 people.

Yes, a large table is needed, like the one I show in the image I posted above. My understanding is that @sans007 needs to occasionally seat 10-12 people in a way that will also allow 4-5 people to feel comfortable. There’s no way to do that by just addressing the table, you have to address the seating. The double banquette does this in a way that doesn’t require 6 or 7 chairs to line the walls of the space.

Unfortunately, the OP’s space is too shallow for this type of arrangement. A U shaped bench seat would fit better. I have no idea how she fit a table that seats 12 in that space. She is a magician.

Not a magician but my table is deep enough (48") that on holidays I comfortably put 2 on each end and 4 on each side.

Well, a banquette is an incredible space saver. You can use a built-in bench along the window wall, or go for a U-shaped bench along all three walls. That will certainly cut down on the chair clutter. I don’t think two separate tables would look as good as one large one, but that’s me. You do you.