[slurgfest]

vim already supports things other than vimscript (e.g. perl, ruby, python). Depends on what your OS packages provide, or compile it yourself (really not too hard).

I don't know how the syntax highlighting could be better since it is already fully scriptable and allows 256 colors, etc.

So what is it that needs to be done? All I get from this is that you think vim should have "better graphics like what Sublime 2 has". So I ask sincerely: what is the actual essential functionality required and why would it demand a 'new VI' rather than a patch or plugin?

If you can formulate what is needed more specifically then it's more likely that you can fix it yourself or at least have a chance of enlisting someone else to do it.