Good concept, this can become a marketplace to find and discover Vim plugins. You have moved one step ahead to easily install(but manage the same?)

Little feedback:

1. Add options to see what a developer just installed. I find it very interesting to see other's development environments, their workflows, history and .rc files.

2. Create a system where developers love to share their workflows, environments, history, vimrc, bashrc settings. Following and connecting with similar workflow developers would be cool.

Overall your first step is perfect!