It sounds like the big question is whether we want to remove Motif version or not. If we want to continue to retain, we may want to have both (e.g.) xpdf-motif and xpdf-qt (and default is xpdf-qt). I personally think the only advantage of xpdf-motif (3.0.4) is speed - because it has a small footprint to start the app. Other than that, is there any other reason to keep having 3.0.4?