That is a possibility I'm also considering. There are also commercial applications that hosts like dreamhost obviously cannot install for people. And this would always have the most up-to-date version, maintained by the application writer.
Honestly I'd be worried if I saw somebody using a tool like this to install WordPress. Too much potential for abuse.
It's not that I don't trust you, but I don't trust the other nefarious guy who will build SEO and setup a site to install corrupted versions of WordPress for people.