I realize this is a different project, but since it looks similar: installing Janus was the worst decision I ever made while looking to improve my Vim experience. It actually made Vim worse , sometimes by just slowing things down, other times because of the lack of quality control in the bundled plugins. One plugin actually caused data loss many times – it completely froze the editor when a certain syntax pattern was…
Most of the stuff bundled in it isn't really necessary, and just makes it harder to understand the clean environment if you're new to it.
Even though it's more work, it's nice to know exactly how you're configuring your own environment, and you get to learn more about it as you do configure it.
To that extent I'm not even a fan of emacs' new package manager.