Still no mention of chunked Undos. Undo'ing character by character is why I gave up on TextMate years ago, but I suppose I should be thankful since it helped me find Vim.
TM is just something "good enough" for people not wanting to go full on to either Vim/Emacs or an IDE. People one would call "newbies" back in the day.
There are many things I've found I like in TextMate that Vim can't do - character-by-character undo, for example.