I'm starting to familiarize myself with DVD Lab Pro and am currently all right with making menus for 4:3 features, but since my bumpers are 4:3 it makes it a bit trickier to deal with 16:9 features. (I can't seem to set aside a title to be 4:3, and then have it connect to the main menu.) This will come into play for a handful of widescreen films, some of which have shoddy restoration work on DVD, and some of which are not OTV on DVD.
An alternative is that I could modify the WDHV86 bumper I use into widescreen.