Commuter rail could possibly happen if funding is available. Might take a while.
I am a REALTOR and coach for Woodcroft Athletics and SDLL Little League. There are many recreational leagues and plenty of individual parks located through out Durham for families and sports.
I have lived in Durham since 1986 and have found many avenues to "play".
In SW Durham there are walking trails in many of the subdivisions as well as play grounds, pools, basketball and baseball fields. Herndon Park located south of I40 offers baseball, soccer and play ground.
Email or call and I will be happy to share.