There isn't a way to do exactly what you want.
Since you typically do this with your partner, the easiest solution would be for you both to be on the same instance. Then the gray chain link would work fine.
For other random people, use the colored federation star link. That goes to the home instance of the post.
I get it. If I was looking at that seating chart, I'd be thinking:
"Screw it. If I have to sit in the front, I'm going to sit in The front."
They don't need to take over all of them. A dozen or two of the largest subs would be plenty. Those with less than a couple hundred thousand subscribers, don't really matter much.
Bots wouldn't have that many spelling and grammatical errors.