These aren't "basically the job of a CTO". Thing (1) is part of the portfolio of a product manager; things (2), (3), and (4) are bread-and-butter engineering management work. Maybe you want to be an EM, maybe you want to be a PM.

In my experience, there are two kinds of "CTO" titles in the industry: the kind given to a principal cofounder who doesn't want to manage people, and the kind given to a principal of any sort when they have their git access taken away and are asked take calls with big customer prospects all day. If you want to be the former kind, start a company; the latter, reevaluate.