Having used it quite a bit now I think its really good. When I first saw it I was a little worried. To me the beauty of ZDL is that is is small and simple allowing you to do what you need to do in order to launch Doom with a PWAD, keeping most of the simplicity and functionality of the command line but taking advantage of modern GUI features without becoming an overly complex screen-after-screen-after-screen of options and radio buttons like some "all things to all men" launchers. With this new one being a little bigger and having tabs I thought it might be heading down that path. However, it seems to be staying true to the feel of the original and the resizeable nature of the window is really useful.
One thing I wonder, and despite what I said above, I'd like another option please. I have tried the options set with the "Quote Paths" option ticked and unticked. I assume that this option refers to whether QZDL will use quotes when passing file locations to the command line or not (for paths with spaces presumably). However, I was looking for an option to switch off the path name being displayed in the "External Files" box. I don't use preconfigured game options. I just drag and drop stuff on to ZDL when I am going to play. So, I always know the location of the external file and I don't need to see the path displayed (plus, much of the time the path is too long to be seen in its entirety any way and it kind of obfuscates the file name too). So, could this feature be toggleable? It's a minor point but it would be nice to have the option IMO because it would clean up the appearance of the window for me.
Current

What I'm asking about
