I’ve reviewed several Logitech gaming keyboards and I usually come away less than impressed. The company tends to bank on its brand and legacy to sell high-priced hardware, while falling far short in features and especially software. Which is why the new Logitech G515 Lightspeed TKL keyboard intrigues me by the simple fact of it being reasonably priced. At $140 for a wireless gaming keyboard, the G515 is decidedly average as a value play—but it’s nearly $100 cheaper than the G915 TKL, a design that’s years old and far from competitive even when it came out, so someone at Logitech is paying att…