Nikon has had many chances to overtake the motion image market, since they don't have a pro video line like Sony or Canon do. Offering what customers want in one camera, instead of spreading development over their full line, is a stronger model since they would decrease development costs and focus on one great product, lowering manufacturing costs. Everyone knows what are the hot specs, it's just a matter of giving people what they want; for some reason few companies actually try to do this successfully.
This is simple - Sony A6300/A6500
It's the best image out there for under $1k.
It can overheat, but if used properly, it will give you the sharpest image around.