Agreed, but a better connection would be Trinidad as that would allow for a more seamless trip from the Front range into New Mexico, which would undoubtedly be the bulk of the connecting traffic.

The line between Trinidad and Pueblo would need some work. It is BNSF but it does not have PTC yet. It relies on over the radio track warrants. Pueblo to La Junta does have PTC as far as I am aware, so that would be less cost.
No reason to not connect it to one or the other, but Trinidad would be the best choice for success.