Unless there is a huge gulf in price between Lockhart and the higher powered next gen consoles, I simply don't see Lockhart selling at all well, certainly not during the launch period if they're coming together. So game design by third parties and on Xbox will be hamstrung (to what degree we don't know but I feel it could be significant enough to warrant mention) and all for a console that will only have a small base. It may grow over the years, but it may also sink if the performance just isn't up to snuff. Plus with more and more people going 4K, a console that might end up focusing on 1080p feels way way off.
Yeah I just don't get it. If Lockhart comes AFTER the main consoles lunch it makes even less sense, with Microsoft willingly holding back their games for a period of time for a system that isn't even out yet.