I'd like to see them back.
FO4 in Chicago would be fun (for me). Seeing the Enclave be the Equivalent of the BoS in New Vegas would be right, I think. Having their leadership destroyed twice, and in the dark, but still powerful if provoked. And the location would be untouched by any real major factions (Does FO:T count as Canon?). I just hope its not a "WE MUST KILL THE ENCLAVE" story again.
There is Chicago yes. Amount of troops there, unknown. I hope the there is very little. Logic would say there is very little there.
On there way they most likely set up shop at Chicago as a relay. Then they ended up in DC, only to be destroyed again and hunted down by the BoS.
I'm not going to turn this thread into another debate but where did you get this idea? Enclave would have gone straight east on Presidential orders (Chicago is in the North). There would be little point to having a small relay in the middle of Chicago... and it would be pointless to just head up that direction for no reason. I mean what point would there be to that at all?
Cheers,
Mk II