Examples: Prettier status line? Don't need it. Tree view of my project? Don't need it, or I use the shell command called tree. Autocomplete? I started learning the APIs of the tools I use because it makes my writing code better and much, much faster. Therefore I don't need that anymore. Git integration? Why would I want that? ":!git" is fine. The sorround plugin would be an idea, but it's key usage is strange in my eyes.
Not spending this time into individualization and instead using this time to learn more about vim has significantly increased my code generation and allows me more easily to work on other systems with the same efficiency as on my own.
If you have some real arguments for plugins I am really, really curious to learn what they are. But please consider before writing if spending the same time into learning how to solve your problem with vim capabilities would not be the better and faster approach.