One of the biggest shortcomings of vim is the lack of a good ido-mode style file-opener. People seem to rave about command-t, although getting it set up on Windows proved too annoying for me.

FuzzyFinder is nice, but graphically it's a mess. Like everything else in vim, really.

This is the biggest meta-shortcoming of vim: the fact that it doesn't come with a built-in programming language. This forces extension authors to bring their own, with the expected consequences.

It has vimscript, but vimscript is at best emacs-lisp's inbred nephew who is just as old but huffs glue and has sex with chickens.

Actually, you can also use mzscheme, perl, python, ruby, and lua to script vim.

Indeed, but that's what the grandparent is saying—you need to bring your own language to the party.