I might as well drop a link to this post, here. While I don’t think you would have much use for the first three in that list, the fourth might be a good place to check, as it is aimed at those already well familiar with the genre of software.
I can’t say I’ve ever really thought of the rows in the binder as being “text files”. They are outline nodes with a seriously beefy text notes field. 
As for long titles, in the Outliner view mode itself, keep the synopsis field enabled even if you don’t need it. That will enable word wrap on the title line. You might want to tune the display settings for the outliner as well, to better suit how you intend to use it. Its use of bold for the titles, for example, might be overkill. That’s one thing I tend to tone down. Have a look at Figure 8.28, in the user manual, for a look intended to mimic a bit how an outline appears in OmniOutliner. Turning off icons and tweaking the fonts can make a big difference in how creative the environment feels!