I love this module - can't believe it's been around so long and I only just found out about. Here are a few features that would make it a real killer:

- abstract away from TinyMCE - like imgassist or IMCE, make it independent of any particular browser
- allow arguments in views - I'd like to set up browsing by content type using the view's argument but at the moment, any link is converted into JS that redirects it back to the edit field
- allow different views for different roles
- allow multiple views in a single popup - for instance, I'd like to have a teaser view and a table view and be able to choose

These ideas are really just icing on the cake, though, the module is a giant leap over linktonode and any other modules trying to do the same thing.