Mark,
Do you mean to open an existing tiddler, to see its current content so you can edit it? That has crossed my mind. It would be a kind of merge with the
SideEditor. Really there should be an option in TW to have the regular tiddle editor show in the tiddler river, or as floating on the side like the SideEditor or split out like rQuickTid. (Not necessarily with different field layouts for the editor though).
I'll let those thoughts mature a bit. But for rQuickTid the primary purpose is not to
work with tiddlers but to
work with something else and merely use TW as a quick access area to put notes. TW should be "insivisble" because you're focusing on that other stuff.
...but, hey, that's just rQuickTid. I hope people can take the concept and run.
Overall, the feature to split out tiddlers into sepatate windows is way underused. I have one absolute killer application for it that I did not mention in the "Potentials" list becuse it is not about adding tiddlers. I'll probably start at discussion on it soon.
<:-)