In "Family Matters: Part 1," Cisco says he sees himself 40 years in the future, but he tells Barry and Caitlin it's 30 years.
Though it is a major plot point, modern blimps do not use hydrogen; helium has been used since the "Hindenburg Disaster" of 1937. Why a blimp with cutting-edge technology, including stealth, would use such an antiquated form of elevation is unexplained.
Mecha-Vibe addresses the Flash as "Barry" in front of Carrie, yet no one gives any notice of this; even though Barry pointed out to Felicity that she'd just revealed his secret identity to a supervillain when she referred to him by name in front of Malcolm Merlyn after Barry helped them in the Arrow episode, "My Name Is Oliver Queen".