Over on Go Oak Cliff, a little game is going on: Four vacant spaces in the Bishop Arts area and four potential restaurants opening soon. It’s fun speculation. But I have a bigger question: How many restaurants can North Oak Cliff comfortably support? I live in the area and eat out most nights. Yet there’s new restaurants even I haven’t tried. I’m happy to see the OC bursting with new business. But when is enough enough? Discuss.