By Daniel Kline The chain that brought you the Doritos Locos Taco has taken a can’t stop, won’t stop approach to innovation. Taco Bell arguably created the current fast-food menu innovation craze when its launched the Doritos Locos Taco in 2012. It certainly wasn’t the first over-the-top fast-food mashup, but it was one of the boldest that proved to be a massive hit. Doritos Locos Tacos inspired a lot of sequels from the Yum! Brands (YUM) – Get Yum! Brands Inc. Report chain and it led to a lot of rivals trying to create their own snack chip mashups. Restaurant Brands International (QSR) – Get …