right, that's why i said "a substantial part". ingen (or any other similar plugin) won't give you access to the internal objects of the host, which max4live sort of does.
my impression, though, is that most of what has been done with max4live involves creating things are much more plugin-like and really just get better integrated into the host than they would as a plugin. i've only see a few things that really use it to get "inside live".
so this could be fairly different, or fairly similar, if they don't make the host objects all visible, it won't be much different from a plugin with a custom GUI, i think.