I moved to vim more out of boredom more than anything. Using vim turned into a game for me... always trying a more efficient way of doing something.
Problem now is that all of the vim keybindings are etched into my head, and it goes way beyond the standard basic keybindings. It has to do with the way Vim chains commands. There's no vim-like editor that can do that except vim, gvim & mvim.
For this reason alone, vim has ruined me for all other editors. I would have jumped all over TM2 two years ago, but I've since changed my priorities. Regardless, I hope TM2 is a success.
I would recommend keeping an eye on vico. It's likely it doesn't do everything you're used to in vim, but there's been constant improvement in this regard over the past 2-3 months.
Problem with vico is that it's based on textmate plugins. If it natively supported vi (and mvim) plugins, then I would have already purchased it. I never understood the decision to go that direction. Vico is gorgeous, though.
That's both an advantage and a disadvantage in my book. The upside is the scripting language is pretty awesome (in my mind). Presumably it would have taken significantly longer to write full handling for the vi scripting language. TextMate bundles seem to be more limited, except insofar as they invoke external scripts.
I do get what you're saying though. You lose a great deal of existing work because of that. I considered vico a new editor built on the base concept of vim, rather than a total replacement, and in that sense I think it succeeds very well.
Problem now is that all of the vim keybindings are etched into my head, and it goes way beyond the standard basic keybindings. It has to do with the way Vim chains commands. There's no vim-like editor that can do that except vim, gvim & mvim.
For this reason alone, vim has ruined me for all other editors. I would have jumped all over TM2 two years ago, but I've since changed my priorities. Regardless, I hope TM2 is a success.