Ironically, Vim IDE plugins often have slightly different behavior on seemingly identical key buildings...

I just wish that Vim plug-ins meant that the IDE would actually embed Vim inside the IDE and do some vimscript magic to do integration. Vim plug-ins that just simulate the default Vim keybindings are just sad.

But some editors do vim integration really well. I was quite amazed when I discovered that the VS Code vim plugin is actually fully compatible with multiple cursors.

I'm guessing these plugins have improved in the last couple of years? Every time I've tested them, I've been somewhat disappointed. Part of it is probably that I expect the Vim experience to include

1. The full command set, like :set paste and :set foldmethod=indent; and 2. Some basic plugins, like EasyMotion and surround.vim.

Not even evil-mode gets this completely right, but it's close enough to be worth it.

Same here. I'm really happy about the plugins. They allow me to stay with vi-style of editing almost entirely. I use them for JetBrains IDEs, Atom, zsh, Firefox, Chromium and Emacs.